I was doing some work on my store yesterday, adding some products and other basic changes, and everything was working fine. I even checked the site again a few hours later from a different computer but made no changes.
Today when I visit both the frontend and admin URLs, I am getting a blank screen. If I hit refresh a few times in the browser, I get this message (intermittently):
Fatal error: Cannot access protected property Varien_Event_Collection::$_events in /home/yogarcom/public_html/dev/lib/Varien/Event/Collection.php on line 53
I saw a somewhat related error in a post about installation, but this store is not a new install. I tried changing the memory values in .htaccess as recommended in that thread with no luck.