To play a Pokemon Mausoleum, you must extract one of the patches included. It will contain .UPS patches ending with "Common" and "Dol".
Use a program like Gamecube Rebuilder to extract "common.fsys" and "start.dol" from a CLEAN US ISO of Pokemon Colosseum. Patch those files with their respective patches and then import the new files back into the ISO using gamecube rebuilder once again.
