every time i try to play CoD UO single Player, the game opens fine, and when im about to start the first level. it says ERROR, somthing bout DEFAULT SHELL SHOCK
You have a mod installed in you call of duty/main folder. Unstall that mod/delete it and then re-try.
Or use COD & UO Purity Fixer. Takes everything back to factory settings. Get it here: http://callofduty.filefront.com/file/CODUO_Purity_Fixer;41461
great fix for other problems, should be pinned man cheers egg