Test runner does not recognize F# tests in VS 11 preview

Hi,

Using VS 2010 I can run NUnit tests written in F#. However, when I load the same project in VS 11 attempt to run the tests using ReSharper preview for VS 11 results in a message "No tests found in project".

NUnit UI finds and runs the tests. If I load the test project in VS 2010, ReSharper recognizes them.

Any help is appreciated.

Vagif