Maybe send them an email and tell them that the new update has crashed your pc, maybe they did the new update to work around the new operating system, sometimes when software are updated, they don't realise that people has different operating systems. they seem to think that every one has the same. But you can email them and let them know your operating system, I.E Xp? vista? or windows 7 or 8? they may have the right update for you. or it could be your firewall or security software that could be interfering with the Net Nanny software. But email them, and explain to them your problem.