Unable to launch disk utility

When I now try to launch Disk Utility it immediately fails to launch. I know it has not been deleted. I tried to copy it from my PowerBook and place it in both applications and library but it won't open and gives a message that it is not compatible with this platform. I had previous problems that were corrected by an Apple qualified technician and it had worked after that. I tried to access it to repair permissions after a rather long period of not opening it (DU). How can I get it to work again? Thanks.

Reinstall the 10.5.8 COMBO update, repair permissions, and restart.

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  • Impossible to launch disk utility from installation disk.

    Hello.
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    0x5564fb08 : 0x19e517 (0x5564fb20 0x6ecf100 0x5564fbc8 0x67886373)
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