sgd88 said:Ok. That didn't work. What are the other possibilties?
Problem with the program that mounts disk images... Try this:
Navigate to ~/library/preferences (in your home directory). Find the file
com.apple.frameworks.diskimages.uiagent.plist
In this directory, and delete it (move it to trash). Then try mounting the disk image.
This file is a preferences file for the disk image mounter (but there really are no preferences, so you won't lose anything important by deleting it). When an OS X program finds that this preference file is missing, it makes a new copy. So often times, when a program is misbehaving, it is because this preference file is corrupted, and deleting it and forcing the app to make a new one rights the wrong....