I have two installations of garrysmod, so that one is a clean base to develop lua with, but recently the original directory has become a real dick, and not let me rename it without a computer restart, half of the time. (I rename them so that one is garrysmod-original, and the other is garrysmod, for example. It’s how I switch them out.) .
Unlocker is a program that DOES NOT work on 64 bit.
However a working thing is at http://lockhunter.com (Actually I just got linked here on another forum, sorry about the waste of a post.) .