I am currently using the trial version of Aperture and decided it's a keeper so I purchased the box version of it new. I called Apple support to see how to go about switching to the purchased version and he told me to NOT just enter the serial number that came with the box version, but to put in the disk and just install over the trial. This dosen't make sense to me, as the trial is the current 1.5.3 version and the box is 1.5. I would be going backwards in versions. Anybody upgrade from trial to box? Can the serial number only be used with the software disk that comes with it? Thanks for any help!