Are some of the archives broken?!

[spookieman]

I downloaded Battlezone Combat Commander.After that I tested the archive with 7ZIp and it gave errors like:CRC failed KaOs02 bin and KaOs03bin failed.I tried to extract the archive but it gave me an error message like:file is damaged.My question is if some of the archived games have archives that are broken or it is my fault or it is something else.This happened to other games too(like Dragon Age Origins Ultimate).Thanks for your answer.

[KiNG]

your answer is in the kaos.nfo of every game. use winrar, 7zip causes crc errors