The message "Process cancelled" on the Canon Selphy CP1500 means that the printing process has been stopped due to a problem. This is usually due to an incorrectly inserted paper cassette, a problem with the ribbon or because the paper feed is blocked. An interrupted connection (e.g. WLAN) or a faulty print job can also cause the cancellation. The problem can usually be solved by checking the paper and ribbon, restarting the device and ensuring that there is enough space for the paper eject tray.