I wanted to swap the engine built in the factory for another one. I chose the factory via the factory manager, but a change was not possible. Now the factory is no longer selectable, not even with a motor facelift.
You you changed the factory from the factory manager while it was producing? And now you can’t select it for anything anymore? Any more instructions or circumstances that got you into the situation?
Yes, it was producing and yes, it was no longer available. would be a savegame usefull?
Probably would 
could you zip it and send it to support@camshaftsoftware.com? (if the resulting file is larger than 7 MB you need to upload it somewhere). Just link this thread. Thanks!
