Ultimate FaceBook Fatal Error - Out of Memory

When I try and activate theis plugin, I get this error:

Fatal error: Out of memory (allocated 30670848) (tried to allocate 4864 bytes) in /homepages/37/d344202986/htdocs/buddypress/wp-content/plugins/wpmu-dev-facebook/lib/class_wdfb_admin_form_renderer.php on line 415

Any Ideas?

Thanks