So any guesses as to what hell will be unleashed when I make the setting change? Will the Forum list become what's on the server? Remnants of the cache on my machine? I'm more than a little nervous about this. How can I protect the functionality (albeit limited) that exists to my Forum users?
I'm surprised it's running at all using the wrong path; if it doesn't work when you use the correct one you can always edit the wrong path back into the config file.