Search for "DELETE FROM" in your OT dir, search the OT dir including all sub dirs. So you can find out the buggy script. It looks like an issue with one of the files the distro is running, not the aac.
Fatal error: Call to a member function fetchAll() on a non-object in C:\xampp\htdocs\pot\OTS_Base_List.php on line 208
Znote which Xampp Version your using?