[X4U] Permissions won't repair

[MacTech]

I tried to repair permissions on a G5 running 10.3.9

During the verifying process, a message was received saying "Disk 
Utility had lost connection with the Disk Utility engine. Try quitting 
and relaunching".

I tried relaunching 3 times but there was no change. I also booted from 
the original G5 CD and tried to run the Disk Utility from there, but 
received the same message.

I ran Disk Warrior and repired Directory structure, but Disk Utility 
still would not run.

3 weeks ago, I deleted a user who left the company.

Any suggestions?