NIS task bar loads white blank screen

I've had Norton NIs for a few weeks with no problems...All of a sudden when I click the icon in the task bar it loads up a white blank screen where the normal NIS used to be...Strange thing is it's doing it on my desktop and laptop at the same time.... when i click on the desktop icon nothing happens... H.E.L.P.  Please... Thanx

 

 

[edit: Clarified subject.]