Canon iP7250 wifi connection issue with this message:
cfFilterChain:ghostscript (PID 5084) stopped with ststus
I found that the issue was not that the Wi-Fi wasn't connecting, but that the printer was defaulting to the top tray which had no paper in it. No error was announced so unlike the Windows version of the printer management software there was no fault displayed.
Now I need to find out how to get the printer to default to the bottom tray which holds A4 paper using Ubuntu.