I just did a major upgrade from 10.3 -> 10.4 for a client, and ran into a problem with two of ten machines: printing from any application crashed the app without getting to the print dialog. This problem affected all user accounts and did not go away after resetting the Printer Setup Utlility (hold down Option while booting, which nukes all saved printers and preferences.) The culprit: bad/old/flaky HP drivers. The solution: delete the “hp” folder in /Library/Printers/ . Go to HP’s site, download the latest drivers (it’ll be one package containing drivers for everything) and install them as instructed. Then go back to the Printer Setup Utility and set up the printers again. (via)