I am running into a few additional problems.
I did for a time have a forum, which included the default introduction forum post (something to the effect of a post saying "Your first forum.") However, now www.ridforum.com
shows "Sorry but this board is currently unavailable," and I'm unable to login my admin user/password, or even register. This occurred after logging out of my ACP panel.
I've found the only way to remedy this problem, is to delete all the PHPBB files in my FTP, re-upload them, and reinstall. However, I run into the same problem when leaving the ACP, and am unable to re-login or register any users.
I also ran into problems trying to restore a SQL or GZ file backup from a forum I had under an older, different domain. Attempting to restore either the SQL or GZ file would return a message saying, "The selected file to backup is invalid." Playing around with the file permissions in the FTP did not remedy this either. Granted, the file sizes are 7,800 KB and 27,000 KB respectively, so I'm not sure if that has anything to do with it.