but you should set it to 7 !
it is combination of three relaxes, 1+2+4, it should solve problem with all GUIDs...and you will still have legit players able to play on server...
strange that you have dupe GUID error... and you have set it to 4 , so it should be relaxed...hmmm... but the value 7 should switch off GUID check at all... try it
dont have xfire/gamespy/etc shits

but i think that you can attach a file here to PM if ya want...
and i can report that 1.51b linux private server patch posted above is workin and i can connect to it...THANKS AGAIN!