Getting lot of package load exceptions while starting Visual Studio Professional 2012 and Solution Explorer does not display the project directory

Hi,

I installed Visual Studio Professional 2012. When I start Visual Studio, I get few exception messages.

Exception Message 1:

"The 'Microsoft.VisualStudio.PlatformUI.SolutionNavigatorPackage' package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension."

Exception Message 2:

"The 'Microsoft.VisualStudio.ServiceModel.VisualStudioPackage, Microsoft.VisualStudio.ServiceModel,Version=11.0.0.0,Culture=nuetral,PublicKeyToken=31bf3856ad364e35' package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension."

Exception message 3:

"The 'Visual Studio Explorers and Designers Package" package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension."

Exception Message 4:

"The 'EurekaPackage' package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension.

And in the Solution Explorer, I cannot view the project folders.Instead of project folders, there is an exception message displayed as mentioned below:

An exception was encountered while constructing the content of this frame.  This information is also logged in "C:\Users\bism02\AppData\Roaming\Microsoft\VisualStudio\11.0\ActivityLog.xml".

Exception details:
System.Runtime.InteropServices.COMException (0x80131237): Signature specified is zero-sized. (Exception from HRESULT: 0x80131237)
   at Microsoft.VisualStudio.Shell.Interop.IVsShell5.LoadPackageWithContext(Guid& packageGuid, Int32 reason, Guid& context)
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.GetPackage()
   at Microsoft.VisualStudio.Platform.WindowManagement.WindowFrame.ConstructContent()

I tried uninstalling and reinstalling Visual Studio again.But still got the same issue. Tried to run devenv.exe /resetsettings and devenv.exe /safemode. But there was no change.Also cleaned up the registry.

Any help regarding the above issue is highly appreciated.

Thanks a lot!

-Mitali Bishoyi