Identity Safe WAS working grest

Identity Safe WAS working great.  All of a sudden when I use my FireFox 50.1.0 browser and click on "open Safe" a Norton window comes up saying "Sorry something is wrong, Please try again".  I never get the Identity log in screen like I used to.  How do I fix?  By the way this started happening AFTER I ran my Norton Utilities 16.0 software   HELP  Greg Gates