WP-Bankroll Problem

I am experiencing a strange WP-Bankroll Problem. In FireFox and Opera, after I submit the form on sponsor.php author_id is not sent to the database, so it ends up being blank.

What is so strange is that I have 3 blogs where this is installed on, and they are all 2.2.2. The first blog I installed it on, the form works fine on IE, FireFox, and Opera. The second blog, the form doesn’t work all the time, sometimes the form sends the author_id and sometimes it doesn’t, yet it works all the time with IE. The third blog acts like the second blog except there are problems with IE too.

My first two blogs have lots of plugins installed, and I thought that may have been the problem, but the third blog is a fresh install, with fresh install files and fresh WP-Bankroll files. I also thought maybe it was a cache problem, but I cleared my cache and tried the form on a different computer. Now I think it’s a session problem. Maybe it doesn’t keep me logged in when I submit the form sometimes, but yet when I check, I am still logged in.

Also all my browsers are the latest versions.

Does anyone have a solution?