Are you trying to install a COPY of the game?
Of course it won't work.
Come'on Batman, I know better than that. I bought the Special DVD Edition at Bestbuy today. I actually had this same problem with Doom 3 when I installed it from the DVDRW, but once I uninstalled Doom 3 & reinstalled it from the DVD reader, it worked fine. This time I can't correct the issue.
I've never had this problem with any other games, just Doom 3 & now Quake 4. I tried to update the firmware on both DVD's but that didn't work either.
This comment was edited on Oct 21, 23:08.