AutoDMG v1.9 is out! Apple unfortunately introduced a couple of OS installer bugs in Mojave beta 4 that are still unresolved. I’ve implemented a workaround for one of them, but one still remains:

• Added 10.14 support.
  ⚠️ To successfully build on Mojave the installer must be on an external volume, see issue #222.
• Removed 10.10 and 10.11 support.
• Removed HFS+ support for 10.14+.

You’ll find the download on the AutoDMG releases page. If you have questions or need help, you can join us in #autodmg on Slack MacAdmins (but please check the documentation and especially the FAQ first).