One of my 12 forums has become inoperable, displaying the following message whenever one tries to enter it:

Could not find a forum_thread_data file for the following thread and forum: 0001, 82, 11

When I try to run "Rebuild Forum Stat Files" on that forum, I get this message:

An error has occured:

Tried to open zero-sized topic 000183 in forum 11. at /web/u4/wfp29622/cgi-bin/ubb_lib_files.cgi line 757."

And when one clicks on "Today's Active Topics" they get the same message as when trying to rebuild forum stat files.

In addition, the UBB does not list the Welcome newest member or the member total as it is supposed to (and always did until this problem occured today). Some other forums were messed up too, but rebuilding the Forum Stat Files on those fixed their issues.

To see for yourself, the UBB URL is: http://www.epicski.com/cgi-bin/ultimatebb.cgi

The problem forum is the fourth one down, titled "Fitness & Health for Skiing"

Thank you for your help!