That's very weird. I can only think of 2 scenarios:
1) There is some kind of copy protection routine built into the installer (never seen that before but they're trying new stuff all the time)
2) Someone was messing with the cd image and gave the disk the wrong name (which seems more likely)
Usually, when you have corruption issues, the installer will notify you of a particular missing file by name.
Check the volume labels of both cd's and see if they both fit the same pattern.
You may have to get the game from a different source ... like Sharereactor
If you did get it from there (don't say if you did, that's illegal in the U.S.
) try posting at their forums.