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Adding managed DLL to unity3d

I'm trying to implement the $p library to recognize gestures for spell casting in a game but I'm getting a Unhandled Exception. I'm using the precompile dll I got from their website and its compiled in the .Net 4 framework, so I'm guessing this is where the problem is coming from. Here is the error:
Unhandled Exception: System.Reflection.ReflectionTypeLoadException: The classes in the module cannot be loaded.
at (wrapper managed-to-native) System.Reflection.Assembly:GetTypes (bool)
at System.Reflection.Assembly.GetTypes () [0x00000] in <filename unknown>:0
at Mono.CSharp.RootNamespace.ComputeNamespaces (System.Reflection.Assembly assembly, System.Type extensionType) [0x00000] in <filename unknown>:0
at Mono.CSharp.RootNamespace.ComputeNamespace (Mono.CSharp.CompilerContext ctx, System.Type extensionType) [0x00000] in <filename unknown>:0
at Mono.CSharp.GlobalRootNamespace.ComputeNamespaces (Mono.CSharp.CompilerContext ctx) [0x00000] in <filename unknown>:0
at Mono.CSharp.Driver.LoadReferences () [0x00000] in <filename unknown>:0
at Mono.CSharp.Driver.Compile () [0x00000] in <filename unknown>:0
at Mono.CSharp.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
Missing method .ctor in assembly C:\Users\Uri\Desktop\GestureSpell\GestureSpell\Assets\PDollarGestureRecognizer.dll, type System.Runtime.Versioning.TargetFrameworkAttribute
The class System.Runtime.Versioning.TargetFrameworkAttribute could not be loaded, used in PDollarGestureRecognizer
Can't find custom attr constructor image: C:\Users\Uri\Desktop\GestureSpell\GestureSpell\Assets\PDollarGestureRecognizer.dll mtoken: 0x0a00000d

You can try changing true to false in your .csproj file. That helps in some cases.

Mono.Security.Protocol.Tls.TlsException: buffer underrun

I have a very strange problem.
We implemented a Soap API to talk to a third party. The API sort of works. There is an IsAlive method which checks if the third party service is alive.
Our application is hosted on an Ubuntu 14.04 server under Apache with Mod-Mono (Mono).
We call this API when we load a particular page. It works up to a point then we get an error. I.E. You can make a request to the IsAlive xxx (It's random) amount of times and it works, then next time you try and do it the following exception gets thrown:
System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.Net.WebException: Error writing headers ---> System.IO.IOException: Error while sending TLS Alert (Fatal:InternalError): System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: buffer underrun
at Mono.Security.Protocol.Tls.RecordProtocol.ReadRecordBuffer (Int32 contentType, System.IO.Stream record) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslClientStream.EndNegotiateHandshake (IAsyncResult result) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0 ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: buffer underrun
at Mono.Security.Protocol.Tls.RecordProtocol.ReadRecordBuffer (Int32 contentType, System.IO.Stream record) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslClientStream.EndNegotiateHandshake (IAsyncResult result) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Net.WebConnection.EndWrite (System.Net.HttpWebRequest request, Boolean throwOnError, IAsyncResult result) [0x00000] in <filename unknown>:0
at System.Net.WebConnectionStream+<SetHeadersAsync>c__AnonStorey1.<>m__0 (IAsyncResult r) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0
at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse (System.Net.WebRequest request) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Web.UI.Page.ProcessException (System.Exception e) [0x00000] in <filename unknown>:0
at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0
at ASP.somepage_aspx.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0
at System.Web.HttpApplication+<Pipeline>c__Iterator1.MoveNext () [0x00000] in <filename unknown>:0
at System.Web.HttpApplication.Tick () [0x00000] in <filename unknown>:0
Mono.Security.Protocol.Tls.TlsException: buffer underrun
at Mono.Security.Protocol.Tls.RecordProtocol.ReadRecordBuffer (Int32 contentType, System.IO.Stream record) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
The API at this point does not work anymore. Even if we refresh the page and make another call. We try to re-request 2-3 times then we get another error.
System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.Net.WebException: The request timed out
at System.Net.HttpWebRequest.GetRequestStream () [0x00000] in <filename unknown>:0
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke (System.String method_name, System.Object[] parameters) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Web.UI.Page.ProcessException (System.Exception e) [0x00000] in <filename unknown>:0
at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0
at ASP.somepage_aspx.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0
at System.Web.HttpApplication+<Pipeline>c__Iterator1.MoveNext () [0x00000] in <filename unknown>:0
at System.Web.HttpApplication.Tick () [0x00000] in <filename unknown>:0
System.Net.WebException: The request timed out
at System.Net.HttpWebRequest.GetRequestStream () [0x00000] in <filename unknown>:0
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke (System.String method_name, System.Object[] parameters) [0x00000] in <filename unknown>:0
The only way to make the API work again is if we restart the Ubuntu Server.
Here is a snippet of how we send the request.
public string TestSiteStatus()
{
getSiteStatus site = new getSiteStatus();
site.site = "XXX";
string res = "";
using (SiteServiceImplService service = new SiteServiceImplService())
{
res = service.getSiteStatus(site);
}
return res;
}
Does anyone know what is wrong here? Is there a problem with my implementation or is this a Mono framework issue?
I have tried the instructions on this page: http://www.mono-project.com/docs/faq/security/ but no success. When I run thetest, it passes the first and sometimes the second time but fails after that.

Turns out there was a certificate issue with our third party. They updated their certificates, we added them to our stores, and it worked.
Our the API SSL cert was vulnerable to a LogJam attack. The ciphering of the certificate caused problems with our server.
This link helped us test and find the problem.

Monodevelop throws the following exception System.DllNotFoundException: SDL2.dll

To be more precise, here is the error I get when I try to run an application built using monogame:
System.DllNotFoundException: SDL2.dll
at (wrapper managed-to-native) SDL2.SDL:SDL_SetMainReady ()
at Microsoft.Xna.Framework.SDL2_GameWindow..ctor () [0x00000] in <filename unknown>:0
at Microsoft.Xna.Framework.SDL2_GamePlatform..ctor (Microsoft.Xna.Framework.Game game) [0x00000] in <filename unknown>:0
at Microsoft.Xna.Framework.GamePlatform.Create (Microsoft.Xna.Framework.Game game) [0x00000] in <filename unknown>:0
at Microsoft.Xna.Framework.Game..ctor () [0x00000] in <filename unknown>:0
at MovingTeddyBears.Game1..ctor () [0x00000] in <filename unknown>:0
at MovingTeddyBears.Program.Main () [0x00000] in /home/Dan/Desktop/MonoDevelopPrograms/LinuxMonoGameMovingTeddyBears/Program.cs:19
There are no errors on compiling the program, but when I run it, I get the above output.
I am on linux mint running monodevelop 3.0.3
ldconfig -p | grep libSDL2
libSDL2_image-2.0.so.0 (libc6,x86-64) => /usr/local/lib/libSDL2_image-2.0.so.0
libSDL2-2.0.so.0 (libc6,x86-64) => /usr/local/lib/libSDL2-2.0.so.0
Any help is welcome please help me resolve this.

NHibernate throws TypeLoadException under mono

I have a .Net based command line app that interacts (CRUD) with PostgreSQL 9.1. Using Nuget, the project currently references NHibernate 3.2.0.4000 and FluentHibenrate 1.3.0.717
Now the code runs fine under .Net environment (meaning Windows Xp/7), but under Mono (Mono JIT compiler version 2.10.8.1 (Debian 2.10.8.1-1ubuntu2.2)), I am seeing TypeLoadException within NHibernate from the exact same code (I did not re-compile anything for mono.). Can someone help and point the way? Thanks!
Here is the stack trace
FluentNHibernate.Cfg.FluentConfigurationException: An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.
---> FluentNHibernate.Cfg.FluentConfigurationException: An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.
---> NHibernate.MappingException: Could not compile the mapping document: (XmlDocument) ---> System.TypeInitializationException: An exception was thrown by the type initializer for NHibernate.Dialect.Dialect ---> System.TypeLoadException: Could not load type 'NHibernate.Dialect.Dialect+NoOpViolatedConstraintNameExtracter' from assembly 'NHibernate, Version=3.2.0.4000, Culture=neutral, PublicKeyToken=aa95f207798dfdb4'.
--- End of inner exception stack trace ---
at NHibernate.Cfg.Configuration.AddDeserializedMapping (NHibernate.Cfg.MappingSchema.HbmMapping mappingDocument, System.String documentFileName) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at NHibernate.Cfg.Configuration.LogAndThrow (System.Exception exception) [0x00000] in <filename unknown>:0
at NHibernate.Cfg.Configuration.AddDeserializedMapping (NHibernate.Cfg.MappingSchema.HbmMapping mappingDocument, System.String documentFileName) [0x00000] in <filename unknown>:0
at NHibernate.Cfg.Configuration.AddValidatedDocument (NHibernate.Cfg.NamedXmlDocument doc) [0x00000] in <filename unknown>:0
at NHibernate.Cfg.Configuration.ProcessMappingsQueue () [0x00000] in <filename unknown>:0
at NHibernate.Cfg.Configuration.AddDocumentThroughQueue (NHibernate.Cfg.NamedXmlDocument document) [0x00000] in <filename unknown>:0
at NHibernate.Cfg.Configuration.AddXmlReader (System.Xml.XmlReader hbmReader, System.String name) [0x00000] in <filename unknown>:0
at NHibernate.Cfg.Configuration.AddInputStream (System.IO.Stream xmlInputStream, System.String name) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at FluentNHibernate.Cfg.FluentConfiguration.BuildConfiguration () [0x00000] in <filename unknown>:0
at FluentNHibernate.Cfg.FluentConfiguration.BuildSessionFactory () [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at FluentNHibernate.Cfg.FluentConfiguration.BuildSessionFactory () [0x00000] in <filename unknown>:0
at MyProj.Repository.FluentNHibernateHelperPostgreSQL.CreateSessionFactory () [0x00000] in <filename unknown>:0
at MyProj.Repository.FluentNHibernateHelperPostgreSQL.get_SessionFactory () [0x00000] in <filename unknown>:0
at MyProj.Repository.FluentNHibernateHelperPostgreSQL.OpenSession () [0x00000] in <filename unknown>:0
at MyProj.Repository.NHibernateSessionHelper.SmartSessionFactory () [0x00000] in <filename unknown>:0
at MyProj.Repository.NHibernateSessionHelper.DoAnything (MyProj.Repository.TargetMethod target) [0x00000] in <filename unknown>:0
at MyProj.Program+<>c__DisplayClass10.<RetrieveDataDriver>b__a () [0x00000] in <filename unknown>:0
Here is the relevant code for FluentNHibernateHelperPostgreSQL.CreateSessionFactory ()
private static ISessionFactory CreateSessionFactory()
{
FluentConfiguration fluentConfiguration = Fluently.Configure();
PostgreSQLConfiguration standard = PostgreSQLConfiguration.Standard;
FluentConfiguration fluentConfiguration1 = fluentConfiguration.Database(((PersistenceConfiguration<PostgreSQLConfiguration, PostgreSQLConnectionStringBuilder>)standard).ConnectionString((PostgreSQLConnectionStringBuilder c) => c.FromConnectionStringWithKey("ConnectionStringKey")));
ISessionFactory sessionFactory = fluentConfiguration1.Mappings((MappingConfiguration m) => m.AutoMappings.Add(FluentNHibernateHelperPostgreSQL.CreateAutomappings)).ExposeConfiguration(FluentNHibernateHelperPostgreSQL.BuildSchema).BuildSessionFactory();
return sessionFactory;
}

The solution was to manually deploy the latest Mono package from go-mono.com
As suggested by knocte in the comment section, 2.11.4 solved the problem.
I haven't tried 3.x, but so far, I have been happy 2.11.x with no reason to jump into 3.x ship yet.

c# - "The authentication or decryption has failed." error while using twitterizer in mono

why i get this error
Unhandled Exception: Twitterizer.TwitterizerException: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure ---> System.Net.WebException: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: Invalid certificate received from server. Error code: 0xffffffff800b010a
at Mono.Security.Protocol.Tls.Handshake.Client.TlsServerCertificate.validateCertificates (Mono.Security.X509.X509CertificateCollection certificates) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.Handshake.Client.TlsServerCertificate.ProcessAsTls1 () [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.Handshake.HandshakeMessage.Process () [0x00000] in <filename unknown>:0
at (wrapper remoting-invoke-with-check) Mono.Security.Protocol.Tls.Handshake.HandshakeMessage:Process ()
at Mono.Security.Protocol.Tls.ClientRecordProtocol.ProcessHandshakeMessage (Mono.Security.Protocol.Tls.TlsStream handMsg) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0
at Twitterizer.WebRequestBuilder.ExecuteRequest () [0x00000] in <filename unknown>:0
at Twitterizer.OAuthUtility.GetRequestToken (System.String consumerKey, System.String consumerSecret, System.String callbackAddress) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Twitterizer.OAuthUtility.GetRequestToken (System.String consumerKey, System.String consumerSecret, System.String callbackAddress) [0x00000] in <filename unknown>:0
at terminal_twitt.Program.Main (System.String[] args) [0x00000] in /home/julio/Projects/terminal-twitt/terminal-twitt/Program.cs:18
[ERROR] FATAL UNHANDLED EXCEPTION: Twitterizer.TwitterizerException: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure ---> System.Net.WebException: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: Invalid certificate received from server. Error code: 0xffffffff800b010a
at Mono.Security.Protocol.Tls.Handshake.Client.TlsServerCertificate.validateCertificates (Mono.Security.X509.X509CertificateCollection certificates) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.Handshake.Client.TlsServerCertificate.ProcessAsTls1 () [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.Handshake.HandshakeMessage.Process () [0x00000] in <filename unknown>:0
at (wrapper remoting-invoke-with-check) Mono.Security.Protocol.Tls.Handshake.HandshakeMessage:Process ()
at Mono.Security.Protocol.Tls.ClientRecordProtocol.ProcessHandshakeMessage (Mono.Security.Protocol.Tls.TlsStream handMsg) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0
at Twitterizer.WebRequestBuilder.ExecuteRequest () [0x00000] in <filename unknown>:0
at Twitterizer.OAuthUtility.GetRequestToken (System.String consumerKey, System.String consumerSecret, System.String callbackAddress) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Twitterizer.OAuthUtility.GetRequestToken (System.String consumerKey, System.String consumerSecret, System.String callbackAddress) [0x00000] in <filename unknown>:0
at terminal_twitt.Program.Main (System.String[] args) [0x00000] in /home/julio/Projects/terminal-twitt/terminal-twitt/Program.cs:18
The application was terminated by a signal: SIGHUP
i use twitterizer and mono 2.6 for linux with .NET 4.0 runtime in it. i have tried this code with visual studio in my windows, and worked perfectly. but when i tried to build it with mono i get this error.
here is my code:
static void Main(string[] args)
{
string requestToken = OAuthUtility.GetRequestToken("my consumer key", "my consumer secret", "oob").Token;
}

I had the same problems so simply talking i choose to import all certificates using
mozroots --import --ask-remove
and now I can login with twitter

See the Mono project wiki:
FAQ Security on SSL/TLS; and
Using Trusted Roots Respectfully article
They will show you how to add the missing x.509 certificates on your system (users) and how to best deal with such situations inside your own application (developers).

Works for setup of kvm with mono and vNext too - otherwise you can't do
kpm restore -s https://www.myget.org/F/aspnetvnext/
Many thanks for the tip!

From mono's documentation:
Note that if you are using a web application (i.e. not the current user) you must add the --machine option like this:
mozroots --import --ask-remove --machine
*you might want to run this with sudo