@oBFusCATed
Thanks for your previous responses.
I've gotten the debuggers attached to cb, but am unable to attach a running process of cb without locking my system.  I can attach cb to Windbg without an issue. 
The issue with the asserts showing up on startup of 11742.  I suspect it was caused by the way that I was updating the new versions of source.  I hadn't been clearing out the obj or dev directories. It's no longer an issue.
wxWidgets' Github master branch contains 3.1.3, which I recently discovered.  Before that, I tried 3.1.1 but it didn't build dlls because of a cast issue, which wxWidgets says has been fixed in 3.1.3 but not 3.1.1.  So therefore, I rebuilt 3.1.2, which I'll use until I build 3.1.3.
Regards,
Frank