Alright, just an update. Hadn't opened WED in a week probably, and all of a sudden it's working. I never did anything differently, it just started working all of a sudden, however I'm still having a few minor problems, like the walls and ground don't match, they don't flow together if you know what I mean. Plus I'll get a little dialog box in-game saying it can't find one of the normal maps (even though it is in the folder and it obviously finds it because it's working now.)

Here's a picture of the error message:


I'll post some screens and more updates as they happen...

Thanks for your help!