This is working great on my dev site, where I cannot replicate this error.
But I am experiencing an odd redirect loop. The error can be reproduced with, or without the full friendly URL function enabled.
It is currently disabled, yet if I go to http://www.valvetime.net/forum Xenforo redirects me correctly to http://www.valvetime.net/index.php?forum.
If I add a trailing slash and go to http://www.valvetime.net/forum/ then I experience the error. I am incorrectly redirected to http://www.valvetime.net/forum/index.php?forum/
To make things more sinister, when full friendly URLs are enabled, then URL will cause the loop, trailing slash or not.
Any idea what causes this?
Advice greatly appreciated!