I've been using Nero 6 for months now & its been fine. I've installed & re-installed it several times. Well last week I had to send my notebook to Sony to be repaired. When reloading Nero, if I click Demo version, I get a "Demo expired" message & if I enter the key it lets me use the software but after closing it & re-opening it, it ask for the key again. Normally I go into the Help\Enter New key, it would store it, but now I get a "The new key cannot be stored" message. I've tried v 22.214.171.124 & 126.96.36.199. I have no idea whats going on.