7 days Null reference exception

That's an unfortunate issue with older game saves due to a recipe change. I hate to say this but there may not be any recovery of this, aside from resetting the region that the workstation is in. Sorry about that, we try our best not to break saves, but it does happen in these alpha stages.

 

 A user here said they canceled the crafting in the workstation(s) and that solved it, it would likely be the only resolution if you can do so.