Another instance of SymRNT or another Symantec repair tool is currently running.

Another instance of SymRNT or another Symantec repair tool is currently running.  Please cose this application and try to run SymRNT again.

 

Does anyone know how to fix this?  I have tried to remove Norton to re-install it.  Unfortunately this seems to keep popping up. I tried task manager but dont see anything running.