I think Blue Marble v3.0 is what was messing up my BtS HOF mod loading. After deleting my entire My Games\BtS folder, I don't have the Blue Marble graphics anymore, but I'm able to load the HOF mod again.
Not sure if maybe the new Blue Marble does something with the .ini file or anything else, but there must be some kind of issue there.
Not sure if maybe the new Blue Marble does something with the .ini file or anything else, but there must be some kind of issue there.