I cannot install all files for Doom3..

For some reason, I cannot install file "pak001.pk4". I have tried thru autoinstall and manual install. I get an error the following error message when I try to copy it directly from CD #2.

"Cannot copy pak001.pk4: Data error (Cylic Redundancy Check)

Also, the CD does not appear to have any damage or scratches. Please help.

Well it's still likely a bad CD. See if you can get another copy from Activision.