Well ever since my documents file went "corrupt", I've had to reinstall every program inside that file (don't ask why I installed them herein the first place) but now they are under Program Files. Anyway, I had to "get" San Andreas again and also download SA:MP from this site but I've been facing all these problems with it

First, I started getting a few .dll errors. One after the other until I had pretty much copied all the .dll's in the San Andreas to the 'system32' folder. But now, the game tries to run but crashes straight away, not even going to the credits/loading screen...
I am not having any of these problems with single player, it runs perfectly fine. It even worked when I was getting the .dll errors with SA:MP. Any suggestions as to why it won't run with SA:MP?