Scott - Yes, this does look like a bigger problem then just the script. It looks to me like part of the initial install didn't work correctly. I think I'd run this by CL tech support since it might also be a bug. It is strange that the script will run OK once the initial run works. You know, I seem to recall that the very first time I ran a script using TkInter I got an error message like this. I haven't had it come up again though.