over 4 years ago - Sleipnir - Direct link
Sometimes they get overwhelmed doing other things. If you disabled all other skills, do they still not work there? If so, feel free to send me your save and I'll take a look. Here are instructions on how to do so:
https://steamcommunity.com/app/688060/discussions/0/1741106440033049878/

Thanks!
over 4 years ago - Sleipnir - Direct link
Hmm, sorry for the issue. I'll take a look as soon as you send it over. Cheers.
over 4 years ago - Sleipnir - Direct link
Ok. So the issue is that the material, in this case Iron and Tin Ore are both in a dungeon waaaaay underground in a dungeon that you don't yet have access to but have discovered. The blueprint shows that it can be built because the material is technically discovered. As soon as you open that dungeon or find iron/tin somewhere else, they'll do those smelting jobs.

I'll work on making some notifications to let you know when materials are inaccessible for later builds.
over 4 years ago - Sleipnir - Direct link
They should be able to.