Visual Studio 2012 Professional - unit tests not working

Question

After building my application I get in the test output:

------ Discover test started ------

Exception has been thrown by the target of an invocation.

========== Discover test finished: 1 found (0:00:01,457) ==========

I'm using Visual Studio 2012 Professional on win7 32bit.

Tried:

1. repairing vs2012
2. reinstalling vs2012
3. changing configurations

4. changing path to

   Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll
   

Nothing worked...

Any ideas?

Previously I worked with Visual Studio 2010 Express edition.

Application is correct - I made just simple class library and test project just to be sure it works. And it doesn't. The same project works with my student premium version.

Answer 1

Ok

I looked again in http://connect.microsoft.com/visualstudio and tried also:

1. moving project files to another location than default
2. changing security rights in files and folders properties
3. run vs as administrator

Nothing really worked until i found by chance vs2012 update 1 (under the "Additional Software" category)

After download and installation everything works fine.