You must have something seriously wrong with your db, php or mysql if your gettin nothin but a blank page. Whats ur site and i may can get it to work for you, like anything else u cant make somethig that will work everywhere, like for instance ive had no errors running it myself so far, but others do here and there, now i cant explain why...usually its cause of a change in table/field structure, which if you know what ur doing u could modify it to fit ur needs, its a simple script really, nothing complicated.
btw go here for the forum script im workin on, calling it MiniBulletin
http://www.dbgtn.com/tf/forum/index.php
only about 80% of the first version... still have lots of stuff to add, as of now u can register/login/newthread/quick reply/full reply
gonna add memberview, profile, sigs, avatars tomorrow..