My set-up is a bit unusual, so bear with me. I run Poser 7 from a USB disk; it isn't fully portable, but as long as I populate my AppData with the right stuff it's worked fine on four different XP installations, and on Windows 7 Professional 64 bit at work.

I recently had to replace the hard disk in my laptop, so I decided to finally install the Windows 7 upgrade. ;) This is Win7 Pro 32 bit, by the way.

However on this installation only, Python scripts that use Tk fail. Non-Tk scripts seem to be fine, as far as I've seen; and as I say, all scripts are fine on my other Windows 7 machine.

Somehow, I can't seem to find where I saved my screenshot of the error message; but I'll post this anyway in the hope that someone will recognise the problem. I'll add the screen shot once I get back home.

Any ideas welcome in the meantime.