Blacksmith C++ Exception: lua runtime error

I’m getting this error when I continue a new game. Maybe connected, but the Blacksmith’s dialog also shows missing graphics and no hover info:

[Missing Graphics >>][1]

Yeah no that happens with me too, I just close & re-open the blacksmith tab or close & re-open the game.

Hmmmm an Error with the entities? Hmmmm any mods Active? While Translation i havent See any issues with them and it looks like the constants.json doesn’t find the pics or the blacksmith.description has same wrong tags

No mods. This starts to happen when the game session has been running 20+ days and save games start to go wonky.