Make Lithophane errors on CC2019
I'm trying to make a lithophane, using an action from http://blogs.adobe.com/richardcurtis/2014/04/18/creativefriday-create-3d-printable-lithophane-and-print-it-directly-from-photoshop-cc/. When I click the 'start', I get a 'command (insert step) is not available' for virtually every step. Is this a compatibility problem, or bug in CC2019?
I'm using CC2019
iMac mid 2017 / 16 GB RAM
macOS Mojave
