Just another player wrote:I can't even load the game, and it gave me the same error message before I installed 1.32 patch.
were there any error messages during installation?
does the folder definitely only contain files from the original installation - no patches, mods, custom models, skins etc,.?
right-click on baseq3\pak0.pk3 in your quake 3 folder and open it with winrar/winzip (pk3's are just zip files) - do that for every pk3 in the folder. if you get to one that winzip/winrar can't open then it's corrupt. you'll need to grab another copy of that pk3 from somewhere.
don't know what else to suggest - other than tracking down something to crc check the pk3s properly or acquiring another copy of the game. you'll still be able to use your own CD key, which is the important bit.