Develop Reference

Difficult loading Spectre.Console .NET typed classes in Powershell

I'm trying to use the excellent Spectre.Console to create nice interactive prompts in powershell. So far I can get a simple Read-Host equivalent to work using the below:
Add-Type -AssemblyName ".\path\to\Spectre.Console.dll"
[Spectre.Console.AnsiConsole]::Ask("Test Ask","Test Default")
Which will produce:
Test Ask (Test Default): Test 123
Test 123
But when I try to access a "typed" class like so:
$select = [Spectre.Console.SelectionPrompt]
I get the error:
InvalidOperation: C:\path\to\proj\testing.ps1:7:11
Line |
7 | $select = [Spectre.Console.SelectionPrompt]
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| Unable to find type [Spectre.Console.SelectionPrompt].
Looking at the Spectre docs I can see that the class requires a return type , so I presume it's failing to find the class because I can't quite figure out how to provide it with a type in Posh.
I've tried some variations such as adding ::New(),::Prompt() and prepending the object with [string], but it always fails to find the type.
I'm able to get the equivalent working in C# without issue, but if possible I'd like to avoid having to write a wrapper class just to get it going in Posh.
Name Value
---- -----
PSVersion 7.2.5
PSEdition Core
GitCommitId 7.2.5
OS Microsoft Windows 10.0.19043
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0

Figured out about 5 minutes after I posted this.
The proper term is Generics, and the way to access classes like this via powershell is as follows:
[Spectre.Console.SelectionPrompt[string]]::New()
Which successfully instantiates a new object with return type string.

BSOD 0x8E STATUS_SINGLE_STEP

I have a BSOD 0x8E every day on five devices in same times on Windows 7.
Allways exception code - 04 - STATUS_SINGLE_STEP
as example:
1: kd> !analyze -v
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
KERNEL_MODE_EXCEPTION_NOT_HANDLED_M (1000008e)
This is a very common bugcheck. Usually the exception address pinpoints
the driver/function that caused the problem. Always note this address
as well as the link date of the driver/image that contains this address.
Some common problems are exception code 0x80000003. This means a hard
coded breakpoint or assertion was hit, but this system was booted
/NODEBUG. This is not supposed to happen as developers should never have
hardcoded breakpoints in retail code, but ...
If this happens, make sure a debugger gets connected, and the
system is booted /DEBUG. This will let us see why this breakpoint is
happening.
Arguments:
Arg1: 80000004, The exception code that was not handled
Arg2: ffdff2a5, The address that the exception occurred at
Arg3: a9c34d48, Trap Frame
Arg4: 00000000
Debugging Details:
------------------
DUMP_CLASS: 1
DUMP_QUALIFIER: 400
BUILD_VERSION_STRING: 7601.17514.x86fre.win7sp1_rtm.101119-1850
SYSTEM_MANUFACTURER: System manufacturer
SYSTEM_PRODUCT_NAME: System Product Name
SYSTEM_SKU: SKU
SYSTEM_VERSION: System Version
BIOS_VENDOR: American Megatrends Inc.
BIOS_VERSION: 1002
BIOS_DATE: 06/04/2013
BASEBOARD_MANUFACTURER: ASUSTeK COMPUTER INC.
BASEBOARD_PRODUCT: P8H61-I LX R2.0
BASEBOARD_VERSION: Rev X.0x
DUMP_TYPE: 2
BUGCHECK_P1: ffffffff80000004
BUGCHECK_P2: ffffffffffdff2a5
BUGCHECK_P3: ffffffffa9c34d48
BUGCHECK_P4: 0
EXCEPTION_CODE: (HRESULT) 0x80000004 (2147483652) - <Unable to get error code text>
FAULTING_IP:
+0
ffdff2a5 0000 add byte ptr [eax],al
TRAP_FRAME: a9c34d48 -- (.trap 0xffffffffa9c34d48)
ErrCode = 00000000
eax=00000000 ebx=846410c0 ecx=00000000 edx=00000000 esi=0c4cdb04 edi=00000000
eip=ffdff2a5 esp=a9c34dbc ebp=801ef000 iopl=0 ov dn di ng nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00004c86
ffdff2a5 0000 add byte ptr [eax],al ds:0023:00000000=??
Resetting default scope
CPU_COUNT: 2
CPU_MHZ: a8c
CPU_VENDOR: GenuineIntel
CPU_FAMILY: 6
CPU_MODEL: 3a
CPU_STEPPING: 9
CPU_MICROCODE: 6,3a,9,0 (F,M,S,R) SIG: 17'00000000 (cache) 17'00000000 (init)
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: BAD_STACK_0x8E
BUGCHECK_STR: 0x8E
PROCESS_NAME: avp.exe
CURRENT_IRQL: 0
ANALYSIS_SESSION_HOST: NETMANNOTE
ANALYSIS_SESSION_TIME: 11-17-2017 12:11:18.0584
ANALYSIS_VERSION: 10.0.15063.468 x86fre
LAST_CONTROL_TRANSFER: from 00000000 to ffdff2a5
STACK_TEXT:
a9c34db8 00000000 0000027f 00000000 00000000 0xffdff2a5
STACK_COMMAND: .trap 0xffffffffa9c34d48 ; kb
SYMBOL_NAME: ANALYSIS_INCONCLUSIVE
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: Unknown_Module
IMAGE_NAME: Unknown_Image
DEBUG_FLR_IMAGE_TIMESTAMP: 0
BUCKET_ID: BAD_STACK_0x8E
PRIMARY_PROBLEM_CLASS: BAD_STACK
FAILURE_BUCKET_ID: BAD_STACK_0x8E
TARGET_TIME: 2017-11-16T13:53:07.000Z
OSBUILD: 7601
OSSERVICEPACK: 1000
SERVICEPACK_NUMBER: 0
OS_REVISION: 0
SUITE_MASK: 336
PRODUCT_TYPE: 1
OSPLATFORM_TYPE: x86
OSNAME: Windows 7
OSEDITION: Windows 7 WinNt (Service Pack 1) TerminalServer EmbeddedNT SingleUserTS
OS_LOCALE:
USER_LCID: 0
OSBUILD_TIMESTAMP: 2010-11-20 11:42:49
BUILDDATESTAMP_STR: 101119-1850
BUILDLAB_STR: win7sp1_rtm
BUILDOSVER_STR: 6.1.7601.17514.x86fre.win7sp1_rtm.101119-1850
ANALYSIS_SESSION_ELAPSED_TIME: cc3
ANALYSIS_SOURCE: KM
FAILURE_ID_HASH_STRING: km:bad_stack_0x8e
FAILURE_ID_HASH: {993602b9-6aa7-fbab-86a8-bb6ad81a3997}
Followup: MachineOwner
The service name can be different: av.exe, scvhost.ext,..
I know that is due to the a driver does not process STATUS_SINGLE_STEP exception.
Is any idea how to find wrong driver? There is no stack and module name in the dump...
I tried to run the Mirosoft Driver Verifier with standart flags and all drivers without Microsoft drivers, dump listing is above.

.NET Framework x509Certificate2 Class, HasPrivateKey == true && PrivateKey == null?

I'm attempting to work with an X509 certificate that was originally imported into the CurrentUser keystore on a Windows 10 computer using the "Certificates" snap-in of an MMC. The same procedure has been tested on a Windows 8.1 computer with the same result.
Using the standard PowerShell PKI module, I'm getting an X509Certificate2 object using Get-Item:
$my_cert = Get-Item Cert:\CurrentUser\My\ADAA82188A17THUMBPRINTXXXXXXXXXXX
The output of $my_cert | fl * is as follows:
PSPath : Microsoft.PowerShell.Security\Certificate::CurrentUser\My\XXXXXXXXXXXXXXXXXXX
PSParentPath : Microsoft.PowerShell.Security\Certificate::CurrentUser\My
PSChildName : XXXXXXXXXXXXXXXXXXX
PSDrive : Cert
PSProvider : Microsoft.PowerShell.Security\Certificate
PSIsContainer : False
EnhancedKeyUsageList : {Secure Email (1.3.6.1.5.5.7.3.4), IP security user (1.3.6.1.5.5.7.3.7), Encrypting File
System (1.3.6.1.4.1.311.10.3.4), Document Signing (1.3.6.1.4.1.311.10.3.12)...}
DnsNameList : {My Name}
SendAsTrustedIssuer : False
EnrollmentPolicyEndPoint : Microsoft.CertificateServices.Commands.EnrollmentEndPointProperty
EnrollmentServerEndPoint : Microsoft.CertificateServices.Commands.EnrollmentEndPointProperty
PolicyId : {D52C406F-C279-4BF2-B7C2-EE704290DB3E}
Archived : False
Extensions : {System.Security.Cryptography.Oid, System.Security.Cryptography.Oid,
System.Security.Cryptography.Oid, System.Security.Cryptography.Oid...}
FriendlyName :
IssuerName : System.Security.Cryptography.X509Certificates.X500DistinguishedName
NotAfter : 4/15/2017 2:15:16 PM
NotBefore : 4/15/2016 2:15:16 PM
HasPrivateKey : True
PrivateKey :
PublicKey : System.Security.Cryptography.X509Certificates.PublicKey
RawData : {56, 130, 19, 252...}
SerialNumber : 4F0000002F700000000000000000000000
SubjectName : System.Security.Cryptography.X509Certificates.X500DistinguishedName
SignatureAlgorithm : System.Security.Cryptography.Oid
Thumbprint : XXXXXXXXXXXXXXXXXXX
Version : 3
Handle : 2241663016272
Issuer : CN=Issuing CA, DC=My, DC=Domain, DC=us
Subject : E=my.name#my.domain.us, CN=My Name
So HasPrivateKey == True, but PrivateKey == null. I've been trying to figure out how to gain access to the private key to perform encryption and decryption. The examples I've seen online all seem to indicate the PrivateKey property of the X509Certificate2 class should be readily available, but apparently I've missed something.
I've read similar questions here, such as Empty PrivateKey in x509certificate2, but none seem to resolve my issue. I've also read Eight tips for working with X.509 certificates in .NET by Paul Stovell, which was very enlightening, but ultimately didn't help. It did help me verify that the Private Key exists in the correct place and, as far as I can tell, with the correct permissions to be referenced by the x509Certificate2 class:
C:\Users\My.Name\AppData\Roaming\Microsoft\SystemCertificates\My\Keys
The name of the key file matches to the Subject Key Identifier on the certificate.
Edit:
The output of certutil -user -store my "Serial Number" is:
Serial Number: 4f000000xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Issuer: CN=Issuing CA, DC=My, DC=Domain, DC=us
NotBefore: 4/15/2016 2:15 PM
NotAfter: 4/15/2017 2:15 PM
Subject: E=my.name#my.domain.us, CN=My Name
Non-root Certificate
Template: Userv1, User v1
Cert Hash(sha1): ad ab 82 18 8a 17 4d 75 11 04 48 7c 43 43 d4 05 b9 74 c8 4c
Key Container = te-Userv1-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Unique container name: fcbba1aa0xxxxxxxxxxxxxxxxxxxxxxx_xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Provider = Microsoft Software Key Storage Provider
Encryption test passed
CertUtil: -store command completed successfully.
What "key" piece of information am I missing here? Why isn't the private key conveniently referenced from the X509Certificate2 object? How do I gain access to it?

Your certutil information shows Provider = Microsoft Software Key Storage Provider which means that the private key is stored under Windows CNG, instead of Windows CryptoAPI (CAPI).
.NET 4.6 added the GetRSAPrivateKey (extension) method to facilitate the otherwise breaking change of letting the PrivateKey property return something which was not an RSACryptoServiceProvider (or DSACryptoServiceProvider). If you have access to that method (I'm not sure what version of the framework PowerShell uses) then it would solve your problem.
Two things to be aware of, though:
GetRSAPrivateKey returns a unique Disposable object each time. You should put it in a using statement/manually call Dispose when finished with it (as opposed to cert.PrivateKey, which isn't unique, so shouldn't be Disposed).
The sign/verify//encrypt/decrypt methods have moved down to the RSA base class (albiet with slightly different, more forward-looking, signatures).

This may indicate one of the following:
1) the private key is stored in the Key Storage Provider (rather than legacy crypto service provider) which is poorly supported by .NET and not supported by PrivateKey property of X509Certificate2 class at all. You can check this by running the following command:
certutil -user -store my "<CertSerialNumber>"
2) the private key is missing.
HasPrivateKey property doesn't necessary reflect the actual picture and may True for non-existent keys or False for existing keys. Run the certutil command above to make sure if the key is presented.
In the case if private key is presented, but the bindings are broken, you can try to restore bindings by running the following command:
certutil -user -repairstore my "<CertSerialNumber>"

I resolved the problem.
For some reason, .NET framework can't import private keys from files, however, it can import from the built-in windows store, this is because the PrivateKey method only supports RSA and DSA keys are per the Microsoft Spec: read the notes under "Remarks" section.
Anyhow, to get a PrivateKey object to return the key info, You need to do the following:
1) Import your P12 file into the Windows Keystore by double-clicking it.
2) Select "Import" when prompted into "Current User"
3) Make sure you select "Make Key Exportable",
if this option is not available then your certificate has no private
key
.
4) Select "Automatically place into store"
5) Write the following code to retrieve your certificate:
Dim CertDataInfo As System.Security.Cryptography.X509Certificates.X509Certificate2
Dim Store As New System.Security.Cryptography.X509Certificates.X509Store("MY", Security.Cryptography.X509Certificates.StoreLocation.CurrentUser)
Store.Open(Security.Cryptography.X509Certificates.OpenFlags.ReadOnly)
Console.writeline (Store.Certificates.Count)
For I = 0 To Store.Certificates.Count - 1
If Store.Certificates.Item(I).FriendlyName = "Heider Sati's Cert(48F57XTHVE)" Then
CertDataInfo = Store.Certificates.Item(I)
End If
Console.writeline ("Cert: " & Store.Certificates.Item(I).FriendlyName)
Next
Store.Close()
If CertDataInfo.PrivateKey Is Nothing Then
MsgBox("NULL")
Else
MsgBox("YES")
End If
6) Run the code, if you get a YES then the private key is not NULL (or NOTHING), which is what you are looking for.
If you load the same certificate directly from the file, the Private key will always be NOTHING / NULL , but the HasPrivateKey will say YES, which means (I know there is a key, but yet, I don't know how to understand it. When you import it into the Windows store, then Windows does translate it into a .NET-Compatible format.
I hope this helps.

PInvoke signature does not match the unmanaged target signature

I'm trying to create a wrapper C# file for modbusm.dll (win-tech.com/html/mbusocx.htm) ,I'm using dumpbin output for this.
Dump of file modbusm.dll
File Type: DLL
Section contains the following exports for modbusm.dll
00000000 characteristics
41128817 time date stamp Fri Aug 06 00:48:47 2004
0.00 version
1 ordinal base
27 number of functions
27 number of names
ordinal hint RVA name
1 0 000085BA _AbortTheCall#4
2 1 00003441 _CloseConnection#4
3 2 000033A7 _ConnectASCII#12
4 3 000033E1 _ConnectDanielsASCII#12
5 4 000033C4 _ConnectDanielsRTU#12
6 5 0000338A _ConnectRTU#12
7 6 00001019 _ConnectTCP2#12
8 7 00001000 _ConnectTCP#8
9 8 0000829A _DialCall#8
10 9 00003376 _EnableConnectionCallback#4
11 A 00003342 _EnableModbusCallback#8
12 B 00008123 _GetCallState#8
13 C 00007FD2 _GetLineDeviceName#12
14 D 00003320 _GetPollDelay#0
15 E 00003339 _Get_Modbus_DLL_Revision#0
16 F 000033FE _HookRspNotification#16
17 10 000032ED _InitializeWinSock#0
18 11 0000277C _MBAPWndProc#16
19 12 0000393F _MODBUSResponse#16
20 13 00007EAA _NumberOfLineDevices#0
21 14 00003521 _PollMODBUS#8
22 15 000039F2 _ReadDebugData#16
23 16 00003BA4 _ReadTransparentResponse#16
24 17 0000332A _SetPollDelay#4
25 18 00003313 _UnInitializeWinSock#0
26 19 00003712 _WriteMODBUS#12
27 1A 00003AB3 _WriteTransparentString#12
Summary
5000 .data
2000 .rdata
2000 .reloc
1000 .rsrc
C000 .text
my C# wrapper is
class MbMasterV7
{
[DllImport("modbusm.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode, EntryPoint = "_ConnectTCP2#12")]
public static extern int ConnectModbusTCP(short Port);
public static string TCPDevice { set; get; }
}
when I am running the code
MbMasterV7.TCPDevice = "127.0.0.1"; // from demo version of .ocx file converted using tlbimp.exe
MbMasterV7.ConnectModbusTCP(502);
in visual studio, I am getting exception
A call to PInvoke function
'TestApp!TestApp.MbMasterV7::ConnectModbusTCP' has unbalanced the
stack. This is likely because the managed PInvoke signature does not
match the unmanaged target signature. Check that the calling
convention and parameters of the PInvoke signature match the target
unmanaged signature.
I have tried all calling conventions and getting same error.
The .Net libraries are available for modbus protocol are not good enough for the new plc type I am working with.
FILE HEADER VALUES
14C machine (x86)
5 number of sections
41128817 time date stamp Fri Aug 06 00:48:47 2004
0 file pointer to symbol table
0 number of symbols
E0 size of optional header
210E characteristics
Executable
Line numbers stripped
Symbols stripped
32 bit word machine
DLL
OPTIONAL HEADER VALUES
10B magic # (PE32)
6.00 linker version
C000 size of code
A000 size of initialized data
0 size of uninitialized data
94E4 entry point (100094E4)
1000 base of code
D000 base of data
10000000 image base (10000000 to 10016FFF)
1000 section alignment
1000 file alignment
4.00 operating system version
0.00 image version
4.00 subsystem version
0 Win32 version
17000 size of image
1000 size of headers
0 checksum
2 subsystem (Windows GUI)
0 DLL characteristics
100000 size of stack reserve
1000 size of stack commit
100000 size of heap reserve
1000 size of heap commit
0 loader flags
10 number of directories
DF90 [ 357] RVA [size] of Export Directory
D7C8 [ 50] RVA [size] of Import Directory
14000 [ 3E8] RVA [size] of Resource Directory
0 [ 0] RVA [size] of Exception Directory
0 [ 0] RVA [size] of Certificates Directory
15000 [ BC0] RVA [size] of Base Relocation Directory
0 [ 0] RVA [size] of Debug Directory
0 [ 0] RVA [size] of Architecture Directory
0 [ 0] RVA [size] of Global Pointer Directory
0 [ 0] RVA [size] of Thread Storage Directory
0 [ 0] RVA [size] of Load Configuration Directory
0 [ 0] RVA [size] of Bound Import Directory
D000 [ 198] RVA [size] of Import Address Table Directory
0 [ 0] RVA [size] of Delay Import Directory
0 [ 0] RVA [size] of COM Descriptor Directory
0 [ 0] RVA [size] of Reserved Directory

First thing first, _ConnectTCP2#12 means that 12 bytes are passed as parameters to the function, which means that short (which is 2 bytes long) is obviously incompatible. You need to pass 12 bytes as parameters, presumably as 3 DWORDs.
Let us, for the sake of adventure, actually disassemble the binary to see what's going on there.
So: ConnectTCP#8 is receiving 2 DWORDs as arguments and calling ConnectTCP2 with 0x1F6 as the second parameter (which is actually a short). Also, the calling convention is stdcall.
That's enough information for us to figure out how to call the function:
[DllImport("modbusm.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Ansi, EntryPoint = "_ConnectTCP2#12")]
public static extern int ConnectModbusTCP(int a, short Port, int b);
Will work, but will throw
"Unhandled Exception: System.AccessViolationException:
Attempted to read or write protected memory.
This is often an indication that other memory is corrupt."
This is because the second integer (that I called b) is actually a pointer to a structure (which its values I can only guess according to the code). So let us reconstruct the structure. According to the code, the structure is accessed five times as following:
Offset Type
0x00 -> INT32
0x04 -> INT32
0x08 -> INT32
0x0C -> INT16
0x10 -> INT32
So, by creating the following structure:
struct MbMasterStruct
{
int a;
int b;
int c;
short d;
int e;
}
And redefining the function to be:
unsafe class MbMasterV7
{
[DllImport("modbusm.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Ansi, EntryPoint = "_ConnectTCP2#12")]
public static extern int ConnectModbusTCP(int a, short Port, MbMasterStruct * b);
}
And calling it as following:
static void Main(string[] args)
{
var structure = new MbMasterStruct();
unsafe
{
MbMasterV7.ConnectModbusTCP(1, 2, &structure);
}
}
It actually works, and it doesn't throw. On my computer, it returned 51 (when the structure and parameters were all zero).
It is now up to you to understand each parameters and see how to properly call the function.

sharpen The activator sharpen.core.Sharpen for bundle sharpen.core is invalid

Am trying to run Sharpen to convert some Java code to c#. Below is the detail of the instruction I am following, environment and problem statement.
Instruction followed:
http://www.pauldb.me/post/14916717048/a-guide-to-sharpen-a-great-tool-for-converting-java
http://community.versant.com/documentation/reference/db4o-7.12/net2/reference/index_Left.html#CSHID=sharpen%2Fhow_to_setup_sharpen.htm|StartTopic=Content%2Fsharpen%2Fhow_to_setup_sharpen.htm|SkinName=RedVersant
Environment:
Eclipse 4.2.0
JDK 1.7 (jdk1.7.0_03)
Problem:
I am able to set up the project in Eclipse and run the build file to convert the code. While executing the target "sharpen-docs" of the build file it errors out with the following message in the eclipse configuration log.
Any help will be much appreciated. Thanks in advance.
!ENTRY org.eclipse.osgi 2 0 2012-07-31 13:23:04.507
!MESSAGE
!STACK 0
org.osgi.framework.BundleException: The activator sharpen.core.Sharpen for bundle sharpen.core is invalid
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:236)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
at org.eclipse.core.launcher.Main.main(Main.java:34)
Caused by: java.lang.ClassNotFoundException: sharpen.core.Sharpen
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:165)
... 25 more
Root exception:
java.lang.ClassNotFoundException: sharpen.core.Sharpen
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:165)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:236)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
at org.eclipse.core.launcher.Main.main(Main.java:34)
!ENTRY org.eclipse.osgi 4 0 2012-07-31 13:23:04.737
!MESSAGE Application error
!STACK 1
org.eclipse.core.runtime.CoreException: Plug-in sharpen.core was unable to load class sharpen.core.SharpenApplication.
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:176)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
at org.eclipse.core.launcher.Main.main(Main.java:34)
Caused by: java.lang.ClassNotFoundException: sharpen.core.SharpenApplication
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
... 17 more

For the records:
The problem got resolved after I install Java 6 .. thanks Anders for pointing towards this.