Error When Trying to Install Counter Strike Source!!

When I get to the fourth disk when I am installing it an error comes up that reads.

internal eror 2902. ixo file copy

I then press ok and installation cancels, can anyone please help me!? 

Have you tried reinstalling?Einhanderkiller

it hasnt installed, i tried to install it twice and i got the same error 

Did you actually buy the game or is it a pirated copy.

Did you actually buy the game or is it a pirated copy.

Cappsmc

i bought the game im not a loser who can't afford games. 

download steam and activate your counter strike code using steam, then do the download thing. worked for mepsychoman0056

worked thank you very much!