blank page appears when editing – with last update of events manager

i am chasing down a bug that appeared about a week ago
1) i had a working site
2) i updated existing plugins (including events manager)– and all of a sudden when i tried to edit a page – i got a blank page
3) i disabled Events Manager – and was able to edit pages – but i still need to edit the event pages, so i next tried to figure out what plugins might be interfering with the Events Manger plugin
4) i disabled NoMoreCaptchas and when i did i got this error
Fatal error: Call to a member function get() on a non-object in /hsphere/local/home/cymather/istasounds.org/wp-includes/query.php on line 28
5)- can you please help me figure out what is going on?