I prepared a project in DVD Arch (trial version of 4.0)
When I go to burn I get a dialog "You are currently logged on to this computer without system administrator privileges. Some features of this program may not be available to you."

I hit Ok, then Next and the buttons to start the burned are disabled.
Is this a feature?
Or because it is a trial version?

I went to the registry and I have full permissions on that app.