When I went on Halo map tools, I opened my Map file (Id made backup maps a few mins earlier) I Tried 2 mod it. I tried 2 change all the humans into grunts. Then I went on Halo, and it worked, but it didnt work the way i wanted. So I went off Halo and tried 2 change it, but then wen I went bak on Halo it sed that one of the files was corrupted and i needed to reinstall the game. I hav reinstalled it loads of times, because it keeps cuming up wiv this. Am I doin sumthin wrong?
Does it say "the following .map file is corrupt, please reinstall the game"? If so, then the mod has not worked and if you replace the modded map with the backed-up version. The modded map is the problem. Just delete the corrupt one and then re-edit what you want to. If it is not the above then please give details as to the file that was corrupt.