I've created a very simple console app in .NET 4.0 that will run as a scheduled task. It looks for local files that are unmodified for a certain amount of time and then parses the file, inserts a record into a MySQL database, and copies the file to the network. I'm using a local SQLite database to track which files have already been processed, but unfortunately I'm running into a problem on one system at the first SQLite operation:
System.BadImageFormatException: Could not load file or assembly 'System.Data.SQLite.dll' or one of its dependencies. is not a valid Win32 application. (Exception from HRESULT: 0x800700C1) File name: 'System.Data.SQLite.dll'
at FileDatabase.CreateDatabaseAndTable()
at Program.Main(String[] args)
This exception is thrown on one system (Windows 7 x64 Home Premium with .NET 4.0 full), but is not thrown on two other systems (dev system + one other, both Windows 7 x64 Professional with .NET 4.0 full).
From browsing other questions, I see that this can happen when the program is run in 64-bit mode since the SQLite DLL is the 32-bit version. The first thing I checked is that the active platform is x86 in the Visual Studio Configuration Manager. I also used IL DASM to verify that the output exe is 32-bit (.corflags 0x00000003 // ILONLY 32BITREQUIRED). I would prefer to keep the 32-bit SQLite DLL and target platform as x86 so that I do not have to make different versions of the application for 32- and 64-bit computers.
I've also read that this exception can occur because of a corrupted DLL file, but since it works on some computers, I think this is not the case.
Other things I've tried on the problem system that didn't help:
Searching the GAC and Windows directory for errant SQLite DLLs, but found none.
Turning off AVG anti-virus.
Running the exe directly instead of the published ClickOnce application.
Uninstalling and reinstalling the ClickOnce application.
Any suggestions would be appreciated - thanks!
Installing the full setup package from system.data.sqlite.org/index.html/doc/trunk/www/downloads.wiki seems to have solved the problem - it must have been some dependency that was not present (possibly in Windows 7 Professional but not Home?). While this solution isn't perfect for a big deployment, I really just needed it on this one computer. Thanks for RoadBump for getting me on the right path.
Related
I am writing an application in C# with Visual Studio 2010 and am close to the end with engineering of my application. For testing i use 3 different machines:
Machine A: Workstation-PC (Intel CPU, Win 7 64Bit, .NET 4.0)
Machine B: Private PC (Intel CPU, Win7 64Bit, .NET 4.0)
Machine C: Labor-PC (AMD64, Win7 64Bit, .NET 4.0)
I want a standalone .exe file for the final version. The application works like a charm on Machines A and B no matter if i run the application in the solution folder or copy it to any directory and run it there. It works always (as it should). But Machine C throws an error, directly on application startup and outputs a "...WERInternalMetadata.xml"-file which says "System.IO.FileNotFoundException":
CLR20r3
myapp.exe
1.0.0.0
53318d78
Testreporter
1.0.0.0
53318d78
5d
f
System.IO.FileNotFoundException
But when I start the application in the solution folder(e.g. ...myapp\bin\x64\Debug), where the *.dll files are contained, the application works perfectly without any problems.
Does this mean, that the program searches for its dependecies in the root directory?
I've already checked the references in code. Furthermore if there were any problems with references, the app would not run on Machine B...
I find it curious that Machines A and B run the program without issues no matter where i place the .exe but Machine C only runs my app properly when placed in specific path....
Maybe the processor plays a role there? Any ideas on how to solve this?
BTW:
How can i build a .exe-file that already contains all dependencies and libraries my application needs. A standalone-exe so to say...
Thank you very much
It looks like the EXE is able to find the necessary DLLs in GAC on machines A and B, but is failing to do so in Machine C. Hence, only the particular path is working.
Please check the GAC.
Also, to embed DLLs into EXEs, refer to this SO thread: Embedding DLLs in a compiled executable
I've found a thread with similar topic, leading me to the solution:
System.IO.FileNotFoundException. Where do I find what path is wrong?
I am using Power Packs, too. When i removed the "Microsoft.VisualBasic.PowerPacks.Vs.dll" from the solution directory and started the application, my program failed with the descripted error. Copying back, then starting the application again was successful. So I guess my the target machine (machine C) needs a Power Pack Installation.
So I guess I can solve this problem in 4 ways?:
1.) Leaving the "Microsoft.VisualBasic.PowerPacks.Vs.dll" with the .exe in same folder and then start my application.
2.) Installing the PowerPack http://go.microsoft.com/fwlink/?LinkID=145727&clcid=0x804
3.) Installing the PowerPack.dll manually to the GAC. Or getting them to the GAC with the corresponding tools as described here http://msdn.microsoft.com/en-us/library/yf1d93sz%28v=vs.110%29.aspx
4.) Embed the .dll right into the .exe
Am I right?
Thank you very much for your help!
I had this problem also, with similar entries in Windows->Application logs, including FileNotFoundException. Very disappointed that every app log clue was just a rabbit hole (lack of specific info on WHAT file).
I eventually discovered the error of my wicked ways via Procmon.exe, and scanning through every line marked "NOT FOUND" in the Result column. There was a companion DLL generated as part of the project that I'd forgotten to copy over to the target machine.
If Procmon.exe ever disappears I'll be dead. It has helped to resolve probably 90% of subtle issues encountered since I began using VisualStudio in 1998.
Gave myself a "BoneHead of The Day" award...
I am new to .NET application.
I have developed the application on 32 bit OS with Visual Studio 2008.
The application required the Microsoft.Interop services and for PDF services to open PDF files and MS Office files.
It also required SQL Express for database operations.
The application works fine on 32bit OS.
Then I created the setup for 64 bit OS, I added a new Setup project with wizard in Visual
Studio 2010 and select the Primary output and Localized resources.
But it does not included the Resources folder to the Application folder.
I set the target machine 64x and build the project, also before building give the prerequisites to the project which is Windows Installer 3.1, and .net framework 4.0, I have used the .net framwork 3.5 in the application.
Then I ran the setup, which executed successfully.
But when I tried to run the application it gave the message "Application has stoped working. Finding for the solution from the web.." and it closed.
Then I saw that there was no resources folder so I just copied the resources folder to the application where it was installed. Then the application worked fine.
So I created the setup again but this time I also provided the Resources folder to the application folder. Built the Setup and tried to run the application but the same message is prompted to me as it was giving before "Application has stopped working...", so I looked for the resource folder and all the required files which were there.
Creating a separate 64-bit version makes no sense in your case.
You have dependencies to 32-bit components; as a consequence, all1 your assemblies must be compiled to the x86 target platform and be installed using a 32-bit MSI.
If you get an "Application has stopped working..." error, this indicates that an exception occurred that has not been handled by your process. You can get the stack trace e.g. from the event log.
1 In fact, at the least the entry assembly must have an x86 target platform, and all other assemblies must have either an x86 or AnyCPU target platform.
Check you have changed the platform target to x64 or AnyCPU in your project -> Build Properties
hey friends thanks for answering my question. Finally doing a lot of things I found that it was converting the sql database to 2008 while creating the setup. And I was setting the sql express 2005 on the client machine. Then I changed the sql server 2005 to sql express 2008 and run the setup. Then I found that at the first time the exe required all the rights to convert so I tried the setup Run as Administrator and bingo the setup works for 2 different pc..
The only thing is required that at first time I need to run the application as Administrator.
Thanks for help I
I've looked at similar questions on SO, but nothing quite matches my issue as far as I can tell.
The exception message:
Could not load file or assembly 'CrystalDecisions.ReportAppServer.ClientDoc, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.
The file is in my GAC. I am developing on a 32 bit machine (Windows 7) running VS2010, everything is .NET4. The target hosting machine is 64-bit Win 2008 R2. My local machine has the CR installation for VS2010; the hosting machine has the 64-bit runtimes for VS2010. I am compiling all my code in "Any CPU" mode for this web application.
It is blowing my mind that it cannot find the file in the GAC. This is an IIS application; is there some sort of permissions issue? I would think IIS would have access to the GAC.
Some suggestions of what to do would be appreciated.
It turns out the answer was ridiculously simple, but mystifying as to why it was necessary.
In the IIS Manager on the server, I set the application pool for my web application to not allow 32-bit assemblies.
It seems it assumes, on a 64-bit system, that you must want the 32 bit assembly. Bizarre.
1) Change your .net profile from Client profile to to .Net Framework 4.0
http://msdn.microsoft.com/en-us/library/bb398202.aspx
2) Check your Embed Interop Types flag
http://weblogs.asp.net/cazzu/archive/2011/03/11/check-your-embed-interop-types-flag-when-doing-visual-studio-extensibility-work.aspx
Regarding the 64-bit system wanting 32-bit support. I don't find it so bizarre:
Although deployed to a 64-bit system, this doesn't mean all the referenced assemblies are necessarily 64-bit Crystal Reports assemblies. Further to that, the Crystal Reports assemblies are largely just wrappers to a collection of legacy DLLs upon which they are based. Many 32-bit DLLs are required by the primarily referenced assembly. The error message "can not load the assembly" involves these DLLs as well. To see visually what those are, go to www.dependencywalker.com and run 'Depends' on the assembly in question, directly on that IIS server.
You simply need to install Crystal Report Report Run Time downloads on Deployment Server. If problem still appears, then place check asp_client folder in your project main folder.
I made C# application for my friend which has connection to access database (mdb file). I have developed application on my computer with win7 x86 installed. My friend had XP and it worked perfectly, but now he installed win7 x64 and application doesn't work. In fact, application starts and behave regular, but cannot connect to database... Database too can be opened with access, but my application cannot connect to it.
What can be a problem? How to make my application works on both operating systems?
regards,
Vajda
Ask your friend to download and install the following file:
Microsoft Access Database Engine 2010 Redistributable
and make sure he picks the 64-bit version there (AccessDatabaseEngine_x64.exe).
By default there is no 64-bit ODBC/OLEDB driver for Access installed, but the 2010 version should work for 2007 databases as well.
You could probably also configure your program to be built for the x86 target. That would run the program as a 32-bit program, even on 64-bit OS.
Most likely, the .Net CLR is trying to fire the app up in 64bit mode by default on his new win7 box and this might be causing some issues with the referenced assemblies.
The first thing I would try is to change the Platform target of the application (go to Project properties in Visual Studio for the application) to x86 (from Any CPU) to force the application to run in 32bit mode.
If this works, you will have narrowed down your problem.
Then, after building the project, look in the bin folder to see which assemblies are being copied to the output folder. If you see any System.Data... or any other .Net assemblies that are already contained in the GAC, you'll want to delete these and then try to fire it up. This will force the application to use GAC assemblies written for 64bit use.
I wrote an application that uses sqlite and it works great on most of the systems. It is written in C#, and the only non-framework assembly is sqlite, which is included by System.Data.SQLite.dll .
I deploy it the same way on all of the machines (copy pasting the exe file, the database file and the System.Data.SQLite file). It works great for all my PC's and most of the PC's I've tried.
But then I've got reports that for some people it throws the following exception:
Could not load file or assembly
'System.Data.SQLite, Version=1.0.65.0,
Culture=neutral,
PublicKeyToken=db937bc2d44ff139' or
one of its dependencies. An attempt
was made to load a program with an
incorrect format.
Now I've made sure the dll file is in the same folder than the application exe file. It's the same dll, with the same version as stated in the exception message above.
I was really confused by this, so I created a fresh virtual machine, installed windows 7 professional on it, and just copy pasted the files, and the thing worked. So if it works on a fresh windows, I can't imagine what the other PC's could be missing...
Note: Two of those machines where the project throws the exception are also running windows 7 proffesional.
I would really appreciate any help on this, because I'm fresh out of ideas...
Here's a possibility: Is the difference between the working and not-working machines 32-bit vs. 64-bit? Are you building for "Any CPU", when you should be building for just the bitness of your external DLL?
It is possible that the machines that throw the exception are running a 64-bit version of Windows and that your program is using the AnyCPU configuration. The System.Data.SQLite DLL is a two-faced beast: a managed part and a native-part. It could be that the native-part is responsible for the exception.
See this question for more info.
Have you checked whether the target system is 64-bit or 32-bit?
It might be that one of your dependencies requires a 32-bit version of Windows. To solve the issue you can specify a platform target in the properties of your C# project: Choose x86 instead of Any CPU.