Pan Chai

This is still happening. I have more information about this one, Xcode: 9.4+ Mac OSX: Sierra and High Sierra. The test scripts is failing now all the time, once I upgraded Xcode to 9.4.2. Again, I enclosed this script for you.. package require Iwidgets ::iwidgets::radiobox .pref -labeltext "Window Management" .pref add NONE -text "Leave existing windows open when opening new one" .pref add HIDE -text "Hide existing windows when opening new one" .pref add CLOSE -text "Close existing windows when opening...

Don, As I indicated in the bug report, this issue only happens in Mac OS X (not in Linux nor Cgywin.) And the script does not crash every time, only randomly but quite often (mostly 7 out of 10.) From my own testing, I would suggest the possibility of issue between itk 4.1.0 and TK 8.6.6 (I had reported one earlier, #115.) I can try to upgrade TK to 8.6.7 or downgrade itk to 4.0.6 as you suggested to see if it helps. However, in a broader sense, since using Tcl/Tk is not limited to one specific project...

Mac OS X: random crashes of wish (tcl/tk 8.6.6) using Iwidgets (4.1.0) radiobox class