Anti Splog will not activate on BuddyPress site

Hi there! The Anti-Splog plugin states that it works with WP Multisite "or"
Buddy Press.  When I attempt to install it on my site, I get:  "Plugin
could not be activated because it triggered a fatal error."
Followed by:  "Anti-Splog is only compatible with Multisite

Unfortunately, I have just a simple WP site for my family, but I get
many spammers.  I'm curious as to why I cannot install and use this
service?  Additionally, several other plugins give me the same error.
So, if the plugin is not compatible with Buddy Press, it should not
say that it is.

I am hoping that I am doing something incorrectly, causing this
message.  Could you possibly help me with this, proving a work around
if indeed, this is only compatible with WP Multisite?