Hi, This is off-topic for this forum, apparently for all forums, but I thought someone might have an answer. I've got a registered copy of 4NT 8.00 which I'm using in Vista. The problem is registration. I can enter the keys, it says the registration was successful, but 20 or 30 commands later it informs me that the trial period has expired and I have to close and reopen. Is there any workaround for this? Thanks!