>You can print OK if you just select the print icon in an application then hit Print but not if >you change any settings. Is that right?
>I need to picture your setup.
>Do you have any other printers attached to your Mac or in the network?
Yes. My main printer is a Brother HL-5340D. I also have two different Canon color inkjet printers, but they are usually powered off (I only turn them on when I'm doing color printing). There's also a HP LaserJet 3055 elsewhere on the network.
>Is the printer connected to your Mac Pro with a USB cable? An ethernet cable? Wirelessly?
It is connected to a powered USB hub which is in turn connected to the Mac Pro.
>In the System Preferences-> Print & Fax pane, does your printer appear there? Have you >deleted the printer from the preferences and added it again? That will ensure you pick up >the latest printer driver.
Yes, it appears in the Print & Fax pane. And, yes, I uninstalled and reinstalled, as suggested earlier in this thread. The Brother is using the system-assigned "Brother HL-5340D series CUPS" driver.
>Is your printer supported by Mac OS X 10.6.2?
I'm not sure how to answer that. Is there a compatibility list somewhere that I need to check? I've never had to do that with any other printer I've ever owned. It's not a Windows-only printer, if that's what you mean.