Thanks Scook. After I cleaned my Sound Forge registry entry your tool worked great. Good job!
After checking the registry to see what your tool had done differently, I saw that I'd had an incomplete path. When I checked the SF program's file properties, it showed Location C:\........\Sound Forge Pro 11.0 but I still needed to finish the path with... \Forge110.exe.
I agree with KiteKrazy1, the change after X1 was unnecessary. Anything that requires fiddling with the registry is just so damned dangerous.