[magick-users] "Unknown device: pam" when converting EPS

[duc.sequere.aut.de.via.decede at imagemagick.org]

> Unknown device: pam

If you build ImageMagick from source it automatically detects which devices
your version of Ghostscript supports.  Upgrade your Ghostscript version and
ensure it supports the pam device or edit delegates.xml and change pam to
a device that your version of Ghostscript support such as pnmraw.