After an upgrade from 16.04 to 18.04 my printer stopped working. The printer is an Epson E360-dn. After printing a test page the I get the message Printing followed by Printing Stopped with the Printer's state message saying "Filter Failed". The printer is network attached. After reading about similar problems and trying different things (reinstalled cups; sudo aa-complain cupsd then systemctl restart cups.service; deleted printer and reattached as a usb device; dug through the error logs) I am at a loss as to where to go next.
The only error message I can find in /var/log/cups/error_log is an error 32 (Broken pipe)
cindy@Calanthe3:/var/log/cups$ tail error_log
I [08/Oct/2018:17:10:45 +1000] Expiring subscriptions...
D [08/Oct/2018:17:10:45 +1000] [Client 126] con->http=0x5573beab3140
D [08/Oct/2018:17:10:45 +1000] [Client 126] cupsdWriteClient error=0, used=0, state=HTTP_STATE_POST_SEND, data_encoding=HTTP_ENCODING_LENGTH, data_remaining=106, response=0x5573bea747d0(IPP_STATE_DATA), pipe_pid=0, file=-1
D [08/Oct/2018:17:10:45 +1000] [Client 126] Writing IPP response, ipp_state=IPP_STATE_DATA, old wused=0, new wused=0
D [08/Oct/2018:17:10:45 +1000] [Client 126] bytes=0, http_state=0, data_remaining=106
D [08/Oct/2018:17:10:45 +1000] [Client 126] Flushing write buffer.
D [08/Oct/2018:17:10:45 +1000] [Client 126] New state is HTTP_STATE_WAITING
D [08/Oct/2018:17:10:45 +1000] [Client 126] Waiting for request.
D [08/Oct/2018:17:10:45 +1000] cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files"
I [08/Oct/2018:17:10:46 +1000] Expiring subscriptions...
cindy@Calanthe3:/var/log/cups$ tail error_log
D [08/Oct/2018:17:11:01 +1000] [Client 126] HTTP_STATE_WAITING Closing for error 32 (Broken pipe)
D [08/Oct/2018:17:11:01 +1000] [Client 126] Closing connection.
I tried re-booting from a 18.04 live usb. I installed the printer with just the default drivers and printing worked out of the box. Clearly this is related to the upgrade process. Any ideas of what needs to be reset to defaults or reinstalled for this printer to work?