I previously organized and tagged a batch of raw photos using viewNX on my PC. The PC crashed and I am now trying to edit that same batch of photos with Elements 11 on my iMac. I am able to access the photos, but when I try to save my edits I receive the message, "Unable to save because write access was not granted." I am not on a networked computer, no one else has access to the photos, and the photos are not open in any other program. Forgive the ingorance, but the the iMac and Elements 11 are new to me; can anyone help me troubleshoot?