7 years and counting... 
My need for a fix is long gone, but I'd like to be able to tell the original group I worked with whether it's now safe to use tkinter from threads. It looks like my original guesses were validated and a fix has been made, but I can't tell if it's universally available. What version of Python would they need to be on, and are any platforms still misbehaved "out of the box"? They will not be willing to rebuild python itself. TIA.