Can you please try the following, and let me know if any of them worked:
* run vs in admin mode.
* disable other vs addins, including typemock productivity and test lint.
* run the tests dll from command line: <path_to_typemock> mockrunner <path_to_devenv>mstest /testcontainer:<path_to_tests>
for example:
C:Program Files (x86)TypemockIsolator.0 mockrunner "C:Program Files (x86)Microsoft Visual Studio 10.0Common7IDE" /testcontainer:"C:Program Files (x86)TypemockIsolator.0ExamplesSharePointindebugTypemock.Examples.Sharepoint.dll"
Also, please start vs with logging enabled "devenv.exe /log" and send us the activitylog.xml (saved here: C:Users<username>AppData<roaming or local>MicrosoftVisualStudio.0) to
support@typemock.com