Troubleshooting & FAQ

Troubleshooting & FAQ
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1. Jobs won't print.
2. Can I have multiple Mac print servers running PaperCut for AirPrint (e.g. to provide different printers to different subnets)?
3. My printers don't show up on the iOS devices when selecting a printer.
4. Other users jobs are showing up in the PaperCut App for AirPrint.
5. Why isn't PaperCut for AirPrint supported on Windows print servers?
6. I changed a printer's Location field and it's not being reflected on the devices.
7. Under what username do jobs from iOS devices arrive in the print queue?
8. Jobs are printing as [generic account], e.g. "guest".
9. How do I uninstall / reinstall the PaperCut App for AirPrint?
10. How do I prevent a printer being shared?
11. Can the PaperCut App for AirPrint display scripting pop-ups?

1.	Jobs won't print.
	Are you printing double sided? Try turning double sided off. There seems to be issues with double sided printing on some iOS devices, as of iOS 4.0.1. Try printing with PaperCut tracking disabled (using `/Applications/PaperCut NG/Control Printer Monitoring.command`) to help diagnose the problem (see the section called “On Mac” for details).
2.	Can I have multiple Mac print servers running PaperCut for AirPrint (e.g. to provide different printers to different subnets)?
	Yes! Alternatively, to provide the same printers to multiple subnets, consider using Bonjour/mDNS "reflectors" (left as an exercise for the reader ;-)
3.	My printers don't show up on the iOS devices when selecting a printer.
	Ensure that the printers are shared on the Mac server. Ensure that PaperCut is installed on the Mac server (primary or secondary server install). It can take a few minutes before the printers show up on the iOS devices. Has it been that long since sharing the printers? Ensure that the Mac server is on the same subnet as the iOS devices. Bonjour/mDNS, the protocol used to publish the AirPrint queues, will only broadcast to the local subnet without further configuration (a "reflector", the configuration of which is beyond the scope of the documentation). Try rebooting the Mac server. This will refresh the list of available printers and restart the Bonjour services that publish them.
4.	Other users jobs are showing up in the PaperCut App for AirPrint.
	The IP addresses of the iOS devices need to be unique. Ensure that the devices are not behind a NAT relative to the Mac AirPrint server. If just one other user's jobs are showing up, ensure that the DHCP lease times aren't too short.
5.	Why isn't PaperCut for AirPrint supported on Windows print servers?
	Although 3rd party tools have been known to expose Windows print queues over AirPrint, we have focused our solution on native Apple technology to provide the best results. Of course, Windows networks can still add a secondary Mac print server (e.g. a Mac Mini) to provide AirPrint support. For those already sharing their Windows print queues over AirPrint, if jobs enter the print queue under a defined username (which should be marked Unauthenticated in PaperCut), and the iOS device's IP address is maintained (check the print queue), then the PaperCut App for AirPrint should still function. Our officially supported option is Mac OS 10.7.
6.	I changed a printer's Location field and it's not being reflected on the devices.
	Changes to the printer's location and name will not immediately be reflected and you may need to restart the system or services to promptly broadcast these changes.
7.	Under what username do jobs from iOS devices arrive in the print queue?
	`guest`. The CUPS web interface will display this username as Withheld.
8.	Jobs are printing as `[generic account]`, e.g. "`guest`".
	Ensure that `[generic account]` is marked as Unauthenticated in PaperCut.
9.	How do I uninstall / reinstall the PaperCut App for AirPrint?
	Delete the Printing app (Web Clip) (hold your finger down over the app until the icons "go wobbly", then touch the cross icon next to the app). Delete the Printing profile via Settings → General → Profile → Printing → Remove It is important that the app / Web Clip is deleted before deleting the profile (if not, problems have been reported such as multiple blank icons returning once the profile is reinstalled, as of iOS 4.0.1). To reinstall, follow the installation procedure again.
10.	How do I prevent a printer being shared?
	See the section called “Limiting AirPrint Printer Deployment”.
11.	Can the PaperCut App for AirPrint display scripting pop-ups?
	Not yet. Scripting pop-ups for the PaperCut App for AirPrint are planned for a future release.

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