completely breaks single-site wordpress

installed on a single-site wordpress install and it completely locked me out of the wordpress admin with the message:

The Simple Ads plugin is only compatible with WordPress Multisite.

I mean, ok, i get it, the plugin isn't designed for single-site use - but completely locking you out of your wp-admin area as a result? that's beyond lame.

I mean the plugin page says 'works perfectly with multisite & buddypress', not 'ONLY works with multisite & buddypress'.