Hi Dokman, JH16 (John) the guy who cracks all the WoW Binaries is a friend of mine - I'm sure I can get him to help you... It isn't the MD5 hash check that is required for Glues, its Signature check (which looks at whether or not the custom patches are from blizzard - which we fake), the MFIL file, which prevents wow from downloading any more game data, the Glue Check which is to prevent UI modification - especially that of LUA/XML Files... any of the above could be giving you an error... Another likely problem is that the base version number on your patch is one not contained in the MPQ field. You cannot have a patch over the REV Number of wow itself (e.g 17399)... Also there is the even higher chance that you are using the old glues/xml for WOTLK and hoping it will work on MOP - This is not the case AFAIK and having had a good chat with Mordred about it, he was unable to get it working as lots has changed... if you want to speak to JH16 - who will very kindly crack your client (because he is a really nice guy) - add me on skype (ben.aldrich) or add him 'Jm_Nero' - and let him know that I sent you...