I have Canon iP8750 series and iP8750 WS showing but don't know if there's any difference between the two.If I have a problem again I'll try removing the 'WS' one as that worked for you. Many thanks!
I solved the problem with my iP8750 by holding the 'Resume' button for about 5 seconds. Printer clicked and whirred for around 2 minutes with white indicator flashing. When flashing stopped and all went quiet, printer was back to normal! Maybe I was ...