When playing with the options menus (while trying to analyze the syntax coloring quirk I brought up earlier) I managed to trigger a stack trace on the options.
I don't think I actually changed anything in the dialogs but I had jumped around the various options trying to find the one I was looking for. Sorry, I can't recall my exact steps though!
Addendum: Can't dismiss the dialog either - cancel, "close window", back, Apply, OK, etc; all generate another stack trace - Had to restart SE in this case.
