I upgraded to the latest version and its still not working for me. As before I am running the Genesis theme framework with Buddypress and yep, its the same error message as before;
Fatal error: Call to a member function get() on a non-object in .../wp-includes/query.php on line 27
I've tried activating it at either network and site level aswell.
So sorry to give it this feedback as I know its free & you are actively working on it. I'd really like to use it - but if its broke, its broke.