Factorio Forums

So I was playing Factorio normally one day, and I had just finished ordering my +3000 construction robots to construct concrete flooring all across my relatively large factory. I saved the game and the next day when I went to load the map it gave me this crash dump (attached).

I've attempted to figure out the cause and I believe it has something to do with whatever surfaces it's attempting to load here as well as the several hundred lines above it. I assumed it was concrete interacting with something strangely so I removed the couple of mods I had at the time for the same issue so I don't believe it was inherently the mods' fault. I then created another map and spawned some concrete to test if the crash could be recreated but to no avail. I will continue trying things after I finish this post but if anyone could assist me that would be wonderful.