NIS Product update 2012

Hi Guys. 

I purchased NIS 2011 3user edition on 10 / 4 / 2012 and on installing it, NIS completed and update to 2012.

I had a new product update pop up on my screen (6/5/12), and clicked to allow it to do its thing. My laptop required restarting once down load was complete, which I did after completing the work I was doing. But on restart this time It says my product has expired... Any advise please  as my details show my expire date is in 2013 ? 

I have tried to reload the product key code / removed NIS and reinstalled.

Oh also I'm my account details it does say there is still 2installs remaining and is showing the very latest version is installed on my system if this helps.

Thanks Dazzling.