Originally posted by elfmund:
thx for the quick reply 
i am running a perfectly normal 10.2 jaguar now and everything works nicely except this particular upgrade... now i have tried shutting it down, downloading the update directly from apple again but the same problem persists!!
Before, and after, every new installation or upgrage, I run "Repair Permissions" in the Disc Utility application. With it I've never had any problems with an installation.
One other thing, you do state that it's MacOSXUpdateCombo10.2.5.dmb that you're trying to use, so I don't think this is the problem, but I downloaded a good part of the OSXServer10.2.5 combo installer before realizing that I'd clicked on it rather than on the plain, old 10.2.5 combo-
Good luck. Joel.