I'm sure I refreshed with Ctrl+F5. I'm using Chrome, I am not sure if it has to do with my computer having windows 8 or not. I know it was working before this update though.
I was having the same problem and the error I got was
Uncaught TypeError: Failed to execute 'appendChild' on 'Node': parameter 1 is not type of 'Node'. acnl editor.is:455
