Was unable to give a screenshot,
But whilst playing my blacksmith stopped working regardless of the abundance of materials.
So i tried to change jobs to a worker and promote another blacksmith to see if that work.
An error occured and it displayed a "JOB UI FAILURE CANNOT RELOAD"
It than proceeded to freeze the whole game and corrupted my save files.
I am currently trying to replicate this error to proive screenshots.
hope this helps,
and I hope you are able to resolve this issue