Windows introduced the REGISTRY and other items which causes programs to fail when moved.
Fix? Uninstall, install but install to the new place.
I have been running a program from my D: drive, and would like to move the program to the C: drive. I can not find the installation disc to reinstall the program. I have tried copying all of the directories that I could identify with the program. This did not work. I have tried to modify the registry entries that I could identify with the program and this did not work.
I am running XP SP2.