I seem to have discovered a repeatable problem (at least with my program). After profiling my application, Visual Studio crashes when "Finalizing results". It always gets stuck on 'Running data transformations'. On the two occasions an internal error was generated, a dialog asked if I wanted to report it, but the reporting program crashed too (twice).
I'm a bit dissapointed that I have signed up to the beta program, find a bug, and I can't submit the crash/bug results.