Here's something else . . . .
I have searched everywhere, including the installation folder, but can't find the physical game maps. However, I just unzipped the "public.zip" file into a temp folder and there's over 2gb of files, INCLUDING all the game maps. So, does the game look into the public.zip file for it's maps? Of should I have unzipped the file into the installation folder?
This is not making any sense! I'm confused.
EDIT: Ok, I have confirmed that the game looks inside of the public.zip file for just about everything. I mean the art, audio, shaders, etc AND all the standard maps. I moved the public.zip file and the game errors when I load it because it cannot find some files. So that confirms it. Why is it done that way? Anyway, I'm in the process of unzipping the public.zip forder to see if the game will read the files "outside" of the .zip file.
I should not have to do all this work just to play the game with custom maps, but it seems that I do.