WebForms web site upon first launch from VS2008 throws this exception on my dev machine, after clicking continue everything works. Also, everything works on server when deployed.

What is this VJSharpCodeProvider, why is it being loaded in vb.net project and why did it start happening all of a sudden?

The assembly with display name 'VJSharpCodeProvider' failed to load in the 'LoadFrom' binding context of the AppDomain with ID 2. The cause of the failure was: System.IO.FileNotFoundException: Could not load file or assembly 'VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
File name: 'VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

=== Pre-bind state information ===
LOG: User = quad7\devuser
LOG: DisplayName = VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
 (Fully-specified)
LOG: Appbase = file:///C:/dev/ins/
LOG: Initial PrivatePath = C:\dev\ins\bin
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\dev\ins\web.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\machine.config.
LOG: Post-policy reference: VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/f645d80b/bb4d1cdf/VJSharpCodeProvider.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/f645d80b/bb4d1cdf/VJSharpCodeProvider/VJSharpCodeProvider.DLL.
LOG: Attempting download of new URL file:///C:/dev/ins/bin/VJSharpCodeProvider.DLL.
LOG: Attempting download of new URL file:///C:/dev/ins/fakturaTest/bin/VJSharpCodeProvider/VJSharpCodeProvider.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/f645d80b/bb4d1cdf/VJSharpCodeProvider.EXE.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/f645d80b/bb4d1cdf/VJSharpCodeProvider/VJSharpCodeProvider.EXE.
LOG: Attempting download of new URL file:///C:/dev/ins/bin/VJSharpCodeProvider.EXE.
LOG: Attempting download of new URL file:///C:/dev/ins/bin/VJSharpCodeProvider/VJSharpCodeProvider.EXE.