why are my crops moving
I've noticed that since I bought a new iMac desktop that my crops in aperture are moving. Something is happening after I set all the crops in a gallery. This is NOT a matter of slipping with my track pad. The crops don't move a lot. And they don't all move. But sometimes moving a little can screw up the composition. I'm using aperture version 2.1.4
Any ideas?
iMac (21.5-inch, Late 2012), OS X Mountain Lion (10.8.5)