Anti-splog Plugin Error

I am getting the following error when I register a new account:

Warning: Division by zero in /home/dio/public_html/wp-content/plugins/anti-splog/anti-splog.php on line 1265

I am using ASSIRA (Pick the cats), I haven't made any other changes to the default settings.

Any ideas?

Site is flagonscave.com and is set to allow both sign ups and new sites. It also is nowhere near ready for prime time.