Well that is quite bizzare... When i patched the game it did not ask for any cd... anyway.. the only reason i can think for this message is that u are not using the original cd... just a backup one... If u are using the original cd then maybe u should check the registry.. what i mean.. locate the unreal tournament entry at local machine i think... then see what is the value of "Game cd" i think again
anyway.. lets say your cd is at E:\ but in "game cd" if it says F:\ ... change it.. anyway u got the picture i hope...
at the end if nothing works... ... try reinstalling the game
^^