Missing Something: UI Not Working

[ShadowProwler420]

I'm thinking all your problems are stemming from how you got the game onto your machine (copied all the files from one machine to another over a network instead of going through a true 'installation' with the discs).

By doing it this way, I believe some key entries were not written to the registry, thus causing the game to function improperly.

So I would suggest doing a clean reinstallation of the game using the discs then load your custom UI back on and see if your problem remains.