We have two users with separate log ins for our MB Pro (me and my wife). I have continued to use Aperture after the trial period, and the said library is still called "Aperture Trial Library", which is ok as everything works well. My challenge is to arrange Aperture available also for my wife when she logs in to the computer with her own password. I tried to do it so that I moved the file Aperture Trial Library from my own Photo file to Public folder (common for all users). At my own side I then just redefined this location from Preferences, and everything works well. However, when I tried to do the same for my wife, I get a notice telling that this file is "unwritable", and it cannot be chosen (i.e. no photos can be seen). What should I do to get Aperture to work exactly in same way whether used with my or my wife´s log ins? Do I need to move the software as well to the public folder or use certain alias tricks?