Bug #13147 Unable to quit/exit program

Description:
None of the three ways to quit the application (X in the upper right of the window, File/Exit, or Ctrl-Q) do anything. The application stays open with apparent change in state.

However, I did open the GRT environment (F4) and noticed some errors (see other issue) and trying to delete a group produced a Workbecn.DeleteSelection error in the status bar (see other issue) which persists in the dialog.

How to repeat:
- Start app
- Reverse engineer mysql db
- Add groups
- try to delete groups (failed)
- Open GRT environment (F4)
- Close GRT environment
- File/Exit (failed)
- Ctrl-Q (failed)
- Force close with X in upper right of window (what do you call that thing?) (failed)

It seems that the bug I reported and this one may be related somehow, I had to force close as well but I did not check into the console and without an error message it might be different... If so Bug #; 13177 would be a duplicate :-/

Actually the bug is what causes the error. Everything after that is just caused by this error. So I close this bug entry and try to fix whatever is causing the error in the first place.