I've noticed this with both Aptana Studio and Titanium Studio sometimes putting up a "quitting unexpectedly" dialog after I have already chosen to quit. It seems not to impact the actual closing of the application and no data is lost, but it looks awkward.
Steps to reproduce:
- Start Studio
- Make sure the start page or dashboard is showing (you may need to click the icon in the toolbar)
- Shut down Studio
- See error pop up as expected