On Thu June 14 2018 10:03:02 Gene Heskett wrote:
> But when I send something to the little brother, knotify  pops up with
> the following message:
> A print error occurred. Error message received from system:
> Error while reading filter description for (bold>) true. Empty command
> line received.

Have you tried running cupstestppd on your various ppds in /etc/cups/ppd ?

--Mike