Protection Suite Error - Won't Go Away; can't fix

There keeps appearing a window that says, "Protection suite Error.  An unexpected error has occurred.  Protection Suite will restart automatically."  It doesn't restart.  This error message also has a VERY long (about 32 characters) error code that CHANGES each time the window appears.  Error code example:  4840a2f8-e2fe-4be9-a641-5d3e863c657b.  What do I do?