Oops - that's a session verification error:
An Error Has Occurred!
Session verification failed. Please try logging out and back in again, and then try again.
And thanks for pointing it out. Back on the first day that I installed this theme, Midnite discovered the same error was occurring with the "Mark as read" button on the BoardIndex page. I fixed that one (the code for the link wasn't verifying a member's session) and I thought I'd caught all the other instances where a similar button shows up, but apparently I missed one.
![Embarrassed Santa [santa_embarassed]](http://www.dsboards.com/SMF/Smileys/classic/santa_embarassed.gif)
(I even confessed to Midnite that I was afraid I wouldn't remember where all those buttons show up - mostly because I don't use them.) But I'll get on that right away...
Could it be the doing of that old Grinch, Diabolos? ![Winking Santa [santa_wink]](http://www.dsboards.com/SMF/Smileys/classic/santa_wink.gif)
We've theorized more than once that the forum is haunted, but it never occurred that he could be causing the unexplained weirdness. Hmmm...