[israces]

Today two things started happening: .dmg files will not mount and disk utility will not launch.

I tried running a backup copy of disk utility from a firewire drive and it also would not launch. I then ran it from a start-up DVD and it ran fine with no problems reported and nothing needing to be fixed.

I restarted from my regular system disk and the error is still there.

Console reports nothing when Disk Utility launches but does show the error "helperConnectionDied" for DiskImageMounter[385] when something tries to access a .dmg

Any help or suggestions on what to try would be greatly appreciated.

[tRr]

Did you try repairing permissions when booted off the DVD?

[israces]

Fixed.

It was a corrupt .pref file.

Thanks for the suggestion though!!