Calling all Mac users..
Recently acquired an oldish Mac (Powermac G4 MDD) for music production etc, got it all setup and working fine, decided to run software update, to update from 10.4.9 to 10.4.11 so it recognises my iPod Touch, midway through installing it said something about an installer error and moving installer to trash

. so i rebooted as it said, and now it gets stuck on the "Mac OS X" screen where with the blue loading bar and doesnt go any further. No restore DVD or CDs came with it. Help appreciated
Ta