Found the answer.
%PATHTOFIXES% used to point to "c:\windows\propatches\" (hence needing to add install\myfile.exe)
The PATHTOFIXES environment variable now points to where the patches actually are.
The upgrade to 9.2 does NOT update your custom actions.
You will have to update them by hand!
Shavlik needs to update the documentation and help file.
Thanks for taking the time to update everyone with solution. I'll forward this on to the Product Manager so we can get the documentation updated.