To help out the conversion process, add: "use Tk::Scrollbar;" to your code. This will cause the scrollbar stuff to be included in the .exe. When running outside of the .exe, this would be autoloaded when needed and all you need is a simple "use Tk;".

Update: This is a common problem. You will have to test,rinse,repeat to find these runtime errors. After awhile, you will just automatically add a "use" statement when you employ some additional widget in the code. I use ActiveState's perlApp program to make .exe's. They have heuristics that look at the Tk methods to force widgets into the .exe. That's a nice feature, but their program costs some $bucks.