http://groups.google.com/group/reinteract/browse_thread/thread/6c6ede9ada30791d#
points out if that if a worksheet that was previously open causes Reinteract to crash, then it's completely impossible to start Reinteract.
We should detect this case (store something in the config file before loading worksheets, clear it after everything finishes evaluating), and then if we detect this happening:
- Put up a dialog that explains the situation and asks for a bug report
- Not calculate any worksheets on startup