I am currently using Aperture 3.5.1. I would like to move my current aperture library to an external hard drive. When I tried to move my library by dragging it to the hard drive, Aperture freezes and I have to force quit the application. I also tried to create A aperture fault to the same hard drive and aperture also freezes. My aperture library is about 50 GB in size and I would like to move it to the external hard drive in order to free up Space on my MacBook air. Am I doing this correctly by just simply clicking and dragging the aperture library to the external hard drive.