Make sure to install the latest version of the beta and then go to Site->Advanced->Remove Connection Scripts.
The extension now encodes all communications with the database for added security. It appears you either have a version of the extension where this isn't working properly, or the connection scripts you have on the server are out of date and aren't decrypting the passed SQL properly.
The encrypted SQL statement is what you are seeing in the error, but that shouldn't happen with the latest connection scripts. If you still have the error after following my advice, let me know and I can set up a screen sharing session with you to look into it further.