Hmm, calendar and color picker crashes it too.
Haven't had a chance to test this, but have you tried with compiler merge into code option set ?
Yikes. I'd hope that's allowed! You could try shutting down FB and doing a -clean (startup command line argument) to clean up your workspace, or try using a totally new workspace and see if it still happens? I'd hate to recommend a reinstall... but FB should not be crashing.
Also check the logs (should be in your workspace metadata folder). I'd bet there's something in there.