Cant update to 10.5.8 Keep getting "run preinstall script" b4 restart

Question

I dont know anything about scripts... I tried updating my mac mini and right before it restarts, it says that the install failed and says "run preinstall script for MacOSXUpdCombo 10.5.8"
I cant even update my iTunes to 9.2 (it says the same thing except is says "run preflight script")
I have no ideal what to do, i searched through the topics and nothing helped that i could find.
I retried it 4 times, I turned off energy saver and screen saver, i repaired permissions in Disk Utility, and i even downloaded the update form a link on apple.com instead of using the Software Update button.
Please help, im trying to update everything and want to update my iPhone but i cant (need an updated iTunes, i use to update it on my PC)

Answer 1

ty42morrow wrote:
I dont know anything about scripts... I tried updating my mac mini and right before it restarts, it says that the install failed and says "run preinstall script for MacOSXUpdCombo 10.5.8"
Welcome to Apple's discussion groups.
Try using Disk Utility to run a "verify disk" operation. If that shows an error, restart your Mac with the shift key down to boot into "safe mode", which will run a disk repair operation.