I cannot create or open a Unit Test Project in Visual Studio 2012 RC

Question

I am consistently getting errors upon opening or creating a unit test project in Visual Studio 2012 RC. Where might I find answers on how to resolve this issue. I have tried multiple repair installations. I have tried uninstalling and re-installing. I have removed all but a handful of extensions that come with the product (NuGet). Any help either fixing this bug or finding out where I could get assistance would be welcome.

The 'Microsoft.VisualStudio.TestTools.Tips.TuipPackage.TuipPackage, Microsoft.VisualStudio.QualityTools.Tips.TuipPackage, Version=11.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file 'C:\Users\Me\AppData\Roaming\Microsoft\VisualStudio\11.0\ActivityLog.xml'.

I believe this is the relevant section from that file:

Entering function CVsPackageInfo::HrInstantiatePackage {52CBD135-1F97-2580-011F-C7CD052E44DE}

Begin package loadBegin package load {52CBD135-1F97-2580-011F-C7CD052E44DE}

ERROR SetSite failed for packageSetSite failed for package {52CBD135-1F97-2580-011F-C7CD052E44DE} 80070057 - E_INVALIDARG

ERROR End package loadEnd package load {52CBD135-1F97-2580-011F-C7CD052E44DE} 80070057 - E_INVALIDARG

Entering function CVsPackageInfo::HrInstantiatePackage {52CBD135-1F97-2580-011F-C7CD052E44DE}

Begin package loadBegin package load {52CBD135-1F97-2580-011F-C7CD052E44DE}

ERROR SetSite failed for packageSetSite failed for package {52CBD135-1F97-2580-011F-C7CD052E44DE} 80070057 - E_INVALIDARG

ERROR End package loadEnd package load {52CBD135-1F97-2580-011F-C7CD052E44DE} 80070057 - E_INVALIDARG

Answer 1

The way I stopped getting the error message was to remove the following sections in the .sln file that looked similar to this:

ProjectSection(SolutionItems) = preProject
    SomeName.vsmdi = SomeName.vsmdi
    Local.testsettings = Local.testsettings
    TraceAndTestImpact.testsettings = TraceAndTestImpact.testsettings
EndProjectSection

and this:

GlobalSection(TestCaseManagementSettings) = postSolution
    CategoryFile = SomeName.vsmdi
EndGlobalSection