zentara
Thanks for the ideas! I think it has to do with having the dialog box up at all. If I display the dialog box and then use Tk::exit or just plain exit the program doesnt stop, the Tk window closes, but the 'repeat' loop keeps running and I still get the errors. However, if I do not display a dialog box and just plain exit, it works fine.
Is there something special that needs to be done once a dialog box is shown to properly exit?