I am trying to copy my Aperture Library (170 GB) to an external hard drive.  I have done this before with no issues.  Now I am getting an error that says, “The operation can’t be completed because an item is being modified.”  There is nothing open.  Nothing I’m working on.  I have copied my library before with no issues.

I have updated my vault and was trying to make an extra copy of my Library before moving my files over to Lightroom.  I just wanted an extra backup.  Any suggestions would be appreciated.

* I figured it out.  I had Aperture open.  That was the problem.

Katie