Yes, I know about ActiveState's recommendation to use Tkx in place of Tk (which pins me to 5.8.x forever). AS is still maintaining Tk, recently issuing an update to fix a startup problem on OS-X which required that libraries be installed, even for "compiled" executables.

I sorta ignored their recommendation because I didn't feel like learning another GUI, plus the fact that my app is 12,504 LOC, spread across 19 modules (only 5 of which use Tk, so maybe it won't be that awful). If you have an opinion of the Tkx learning curve, documentation, and Tk->Tkx migration, I'm all ears...