Nero 7 and Vista update.

Hi guys, little problem, up until the last windows vista update on my ACER Travelmate 4720 everything was fine then... I noticed the sign that said " windows has finished installing new updates" after that I got a message to say that Nero home had stopped working and that there were new updates for Nero to fix the problem, this i did and it downloaded 174MB of info from the net, ok so after this was all done it still tells me that Nero home has stopped working and now it won't even play movies anymore, remember there was nothing wrong with the Nero player before the update from Micro soft Vista. I think that it could be a firewall problem or what?. any ideas what to do?. thanks Carlo