Leopard geeks -- need help with printing issue

[Dick Moore]

Really stuck here, need help from my fave Mac geeks. My HP printer C5550 will not print from my frakkintosh via USB under 10.5.6. I get a CUPS error log that says "/cups/backend/usb" can't load, which gives a "missing usb class driver" error in printer monitor. I also have an error in the log file that says ".com.apple.print.PrinterProxy[2234]: PrinterProxy[2234]: [WSX] Will not load into com.apple.print.PrinterProxy as the hard coded exclude list says no.
kernel[0]: TextEdit[2220] Unable to clear quarantine `HP Photosmart C5500 series.app': 93"

If this means anything to you, please help me fix this. I have no printing to this new printer, and don't have another printer to try. The printer works fine under Tiger 10.4.11 and Leopard 10.5.6 on my old iMac G5. I don't know if it's relevant, but my CPU is an Intel E2200 running on a Gigabyte main board.

[Fred_Also]

See if this will find the printer:

http://127.0.0.1:631/printers/


Fred Also

[Dick Moore]

Nope, nada. Tried every combination of brand, name and model.

[Dick Moore]

OK, tried to print from the CUPS webpage. It sees the printer, tries to print and fails with the same error that the Leopard error log shows "/usr/libexec/cups/backend/usb failed". Back where I started.

[M>B>]

In your print dialogue box, Command P, click on PDF and save it, then print that saved PDF it often works for me with stubborn printing issues?

But it is not a fix!

[tenders]

delete the printer, reinstall the driver from scratch. this kind of thing happens from time to time even on an "apple-labeled" Mac.

[Doc]

In Print & Fax pref's, right-click on the printer-icon and select the option to reset the printing system.

It will wipe your printer-settings so if you have any network printers with a unique setup, write down the settings before doing this.

Then set up a new print queue for the printer.

[Dick Moore]

Thx all, good suggestions. However, no joy. This smells funny to me in that the error about printproxy indicates that the printer is "quarantined," whatever that means. I've gone so far as to do a clean install of Leopard, add only the printer driver, and try to print a one sentence new TextEdit doc. Doesn't work, same errors. Leopard or CUPS is seeing/not-seeing something in the frakkintosh and/or printer it doesn't like...

[Doc]

Are you using the official HP driver? Did you download the latest from their site?

If so, that's probably the trouble. HP's drivers are classified as malware by 90% of the sysadmins in my unofficial poll.

They get worse if you've got printer sharing enabled. I'd start by making sure that it's turned off in the Sharing pref's.

I suggest that you try a Gutenprint driver instead of HP's.
http://sourceforge.net/project/showfiles...up_id=1537&package_id=273638

[Dick Moore]

Doc, thx -- I'd love to use Gutenprint but there isn't one for this printer. I am using the one and only HP driver. I've tried it with sharing on and sharing off and it doesn't matter which I choose, still don't work -- given the nature of the errors reported, I'm not sure that would matter much. On the HP Forum, another guy is having similar problems on a Mac Pro and the error logs indicate that the printer can't be "authenticated", whatever that means.