Your memberslist.cgi may have been corrupted.

Grab the 5-series member rebuilder from this page, and run it:

https://www.ubbcentral.com/downloads/

That should help. You could also open up a support ticket.

(The rebuilder will ask that you turn your board off, which isn't really easy. You can edit the UltBB.setup file in Notepad - change the $BBStatus line from reading ON to OFF.)

This thread for sale. Click here! [Linked Image from navaho.infopop.cc]