client-error-not-possible error when adding a printer

[floflooo]

Hi,

I have Linux Mint Debian Edition Release 1 (64 bit).
I tried to add a network printer recently using system-config-printer and it failed with the CUPS error "client-error-not-possible". Luckily, I managed to find what is wrong and add the printer.

To reproduce the error:
   Open 'Printing' (system-config-printer)
   Click on Add Printer
   Choose LPD/LPR Host or Printer
   In the Host field, enter, say, lpd://my.printer.edu
   Click on Forward
   Pick a printer, say 'Generic'
   Click on Forward
   Pick a driver, say 'text-only'
   Click on Forward
   Click on Apply

A cryptic error message window pops up: "CUPS server error. There was an error during the CUPS operation: 'client-error-not-possible'.

Now repeat the same steps from the beginning, but for the host name, enter my.printer.edu instead of lpd://my.printer.edu. The printer is added without trouble.

Clearly, system-config-printer does not like that the host name contains the protocol (lpd://). However, when the printer uses a queue, it does not matter if the queue is specified in the queue field, or directly in the host name, e.g. my.printer.edu/queue1 works fine.

Therefore, I suggest that system-config-printer is made more flexible by accepting host names that contain the protocol, e.g. 'lpd://my.printer.edu', without crashing.