I have a major issue with my Powerbook. Everytime I try load up a .dmg file, the computer attempts to mount it, and then I get an error message saying "Disk Copy helper unexpectedly terminated." At first I thought it was a problem with those specific .dmg files but it does that to every single one I aquire, including iMovie 3 and Quicktime 6 dmgs. Has anyone had this problem before? I desperately need to fix this. I've tried running a virus scan and no difference. I'm running a 1Ghz Powerbook on OS 10.2.3. Any help from anyone would be greatly apprecitated. thanks!