Can you send me a screenshot of:
- R# Options > Plugins screen with "Show details"
- R# Options > Unit Testing
- R# Options > Unit Testing > MSTest (or NUnit if you're using that in your Silverlight tests)
Attach a ReSharper log:
Start visual studio like this:
devenv /ReSharper.LogFile "C:\resharper.log" /ReSharper.LogLevel Verbose
Do a test run.
You'll find the logfile in C:\resharper.log.