If you're trying to uncompress the recently uploaded Wrigley Field, it was edited with a tool called RED MC which means you can't edit it with any other mod tool available. If it's edited with RED MC it won't play nice.
Tested this out, found no issues.
The DDS file in question that you should be looking at is in overlay_static_preload.iff. I don't know the number of the file.
The only way to play the game legitimately is through a disc. Any other way to play it leads to a discussion about piracy/cracking, which is frowned upon or most likely banned from discussion here.