Comment 3 for bug 1490321

I saw this too.

I just did
sudo apt-get install hplip --reinstall

and it added /var/spool/cups/tmp/.hplip
with the correct permissions

$ sudo ls -alh /var/spool/cups/tmp
total 36K
drwxrwx--T 3 root lp 4.0K Nov 19 09:56 .
drwx--x--- 3 root lp 24K Nov 15 19:54 ..
-rw------- 1 lp lp 0 Nov 19 08:34 cups-dbus-notifier-lockfile
drwxr-xr-x 2 lp lp 4.0K Nov 19 09:56 .hplip

might be a work around, don't know why it didn't do this before (or why it got deleted)