Anit-splog, Assira fatal error

Hi: trying to use Anit-splog with:
Wordpress MU 2.9.1
Buddypress 1.2RC2

I get the following errors:

When using reCaptcha the answer is always wrong - I noticed this on the Anti-Splog RC1 thread.
When using Assira I can identify the cats, then I get an error:

Fatal error: Cannot redeclare startelement() (previously declared in /var/www/pingmusic/wp-content/mu-plugins/anti-splog/asirra.php:41) in /var/www/pingmusic/wp-content/mu-plugins/anti-splog/asirra.php on line 41

My site is

It's a fresh install on a Amazon EC2 instance running Debian LAMP.

Thanks in advance