The upgrade went smoothly and the board seems to be working fine, but the last step:

"Enter the control panel, and click on “Recount Categories Stats”. This will recount all the posts and update your frontend statistics. You should apply this action from time to time to ensure consistency in your forum statistics."

Resulted in a page that briefly flashed the following error (had to use a quick screen capture to get it):

"Warning:is_resource() [function.is-resource]: Only one argument expected in /home/********/********/************/components/com_fireboard/sources/fb_db_iterator.class.php on line 70"

Note: Asterisks were used above to preserve anonymity.

Hmmm, more specific...

If I click on the *Button* in the control panel, it generates this error.

However, if I click on it in the text list along the left side of the screeen, it seems to work correctly.