I'm using an unregistered version 4.10 that I just downloaded. It says it is fully functional (besides the 10 slide limit). I'm trying to use the time limited usage function but it doesn't seem to be working. I open Project Options, check the checkbox for "Enable time limited usage", set the date, and then click 'OK'. When I re-open Project Options, the checkbox is unchecked. If I set the date to a previous date, the time limit function doesn't work. Past dates, future dates...the checkbox never stays checked. How is this function supposed to work? Thanks, Josh