Thanks for reporting that crash, we'll look into it!
As for the lifetime of the Bonfires - that's something new: usually we get reports from people who managed to load so many Fires into Bonfires by using the robots, they run out of resources on the map.
The typical scheme would be to unlock Storage units and then divide CraftoMates into 2 parties: the bigger party would be busy crafting the Fires, while the smaller party of 1-3 CraftoMates would deliver those Fires to Bonfires.
How are you trying to approach this task?