DisableSFC patch is a bit tricky, WinNTSetup will avoid making changes to system dll files if it's not entirely sure. Before Vista every windows language was a bit different. Cause I don't have all languages and service pack, it may not work in all version. Most other bug were just silly coding, that properly never had cause any problem, but should have been fix. Only serious bug was with driver integration for windows 8, while running under windows XP. Well it's getting harder to support XP, but i don't give up yet