HaloMods "Classic" Read-only Archive

please help I tried to open CE it closed right away and gave me this error
we have detected that one of the halo pc files is missing or corrupted. We reccomend removing and reinstalling the game. (shaders/vsh.bin)

please help...

OMFG!!! If it says to remove and reinstall the game, and you don't know what the problem is, THEN REMOVE AND REINSTALL THE GAME!!!!!! OMFGBBQ