I've been working on problem for over a week and found out they (wnsoft support) just deleted (not closed) my support ticket. This ticket contained day of debugging information as well as screen shots and replies from wnsoft support. The last thing they mentioned was that they would escalate the ticket and then...poof the ticket is deleted. Ticket that was deleted is: 8LQ8YZL8XT I opened a new ticket that is: YJ193XVX3L Basically, the problem I'm having is that I upgraded to a new computer and loaded the new version of the software (5.5). After installing, I load the key, which it says is successful. Then I quit the application and try to launch it again. NOTHING. No splash screen, no process in the task manager nothing. I can't get PTE to launch again unless I remove the key from the registry, which then returns it to DEMO mode. I'm getting very, very agravated as it has taken quite a bit to explain this to support and very little progress. The last version (which I happen to have sitting around) I could get working is 5.03. Anything after that I see the same issue. -Andrew