Hello, actually I don't think it is really a heirloom-doctools issue, but rather problem with the font or ghostscript.
The problem is described at https://github.com/n-t-roff/heirloom-doctools/issues/33 With the test file supplied by the user and troff -ms test.ps | dpost > test.ps gs test.ps I get the same errors. When I use other TTF fonts it works. The first error line from ghostscript is Error: /typecheck in --readonly-- When I compare test.ps proccessed with this an a other font the first different line with the not working font is /Notice (APL385) readonly def Could this be a hint to the cause? Thanks, Carsten