Google Cloud print stopped working after reboot

[Gary Stainburn]

I've rebooted my server for the first time in ages and now my Google Cloud 
print server has stopped working.

If I start up the server in a terminal window I get the following (I also get 
this if I "systemctl status googleCloudPrint"

[gary at lou 
~]$ /usr/bin/google-chrome  --type=service --enable-cloud-print-proxy --no-service-autorun --log-level 
2 --enable-logging=stderr --user-data-dir=/home/gary/.GoogleCloudPrint
[1469:1469:0622/153143:ERROR:browser_main_loop.cc(231)] Gtk: cannot open 
display: 
[1462:1487:0622/153144:WARNING:print_system_cups.cc(456)] No print server 
specified. Using default print server.
[1462:1487:0622/153145:ERROR:printer_job_handler.cc(709)] Failed to get 
printer caps and defaults, printer name: \\\LeedsShowsroomCopier
[1462:1487:0622/153145:ERROR:printer_job_handler.cc(709)] Failed to get 
printer caps and defaults, printer name: \\\OKI_C511
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\Call_Centre_Colour
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\CutePDF_Writer
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\Google_Cloud_Printer
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\Leeds_showroom_copier_2
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\Save_to_Google_Drive
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\ValuePlusDonc
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\ValuePlusFord
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\ValuePlusKia
[1462:1487:0622/153145:ERROR:cloud_print_connector.cc(590)] CP_CONNECTOR: 
Failed to get printer info, printer name: \\\ValuePlusSvc


If I try to print to one of the printers, it gets added to the queue but then 
it just sits there.

I've no ideas how many changes  have been made to the server since it was last 
rebooted, nor even when that was. I've done a yum update but as it's a Fedora 
19 server there were no updates to apply.

Google searching doesn't seem to be helping so any suggestions would be 
appreciated.

Gary