Comment 13 for bug 133982

Thanks Notclive!
I followed your advice and edited the file (sudo kate /etc/apparmor.d/usr.sbin.cupsd) by adding the line

/etc/* r,
at the end of the list of all the other /etc/ exceptions.

This permanently fixed the problem. How will this fix make it into the next update? I don't want to repeat it all the time.