01-26-2018, 07:29 AM
You aren't missing just Drop Shadow, but also a couple of others. In your Gimp installation do you see usr/share/gimp/2.0/scripts/drop-shadow.scm, usr/share/gimp/2.0/scripts/perspective-shadow.scm, and usr/share/gimp/2.0/scripts/xach-effect.scm (that you all seem missing)?