Factorio Forums

I created a modded save in singleplayer on my computer, with the intent of sending it to my friend to host as a multiplayer game. I am able to load the save as singleplayer on my PC just fine, and so is he. But when he tries to load it as a multiplayer game, he gets a hard crash.

Steps to reproduce:

• Copy the attached save file into the saves folder (for me, %appdata%/Factorio/saves).

• From the main menu, click singleplayer, Load Game.

• Select the save, click "sync mods with save".

• Reload the game.

• From the main menu, click multiplayer, Host saved game.

• Select the save, click "Load".

• Click "Play."

For me, I can load it as a multiplayer game, following the steps above, with no issues. For him, this causes a Factorio crash to desktop right when he clicks Play. His logfile is attached.

Thanks for the report. Some part of the connection between Factorio and Steam is failing for him.

Have him reinstall Steam and then go into the game properties and verify the Factorio files.

Eventually, we were able to find a way around the issue by finding a time we could both be online. When I hosted the save as multiplayer, he was able to join, and take a save. Then he was able to host that save without any issues.

Something he told me struck me as odd. When he was playing the save as singleplayer, the minimap showed my name, not his. Yes, as singleplayer, he saw "Xynariz" on his map. Our hypothesis is that this is tied to the crash, and that the reason the Steam ID was failing was that it was expecting to get my steam ID from his Steam account, which obviously didn't happen. Once he joined my save, both of our names showed up on the map as expected, and so the next time he launched as multiplayer, it was trying to get his name once again. (Again, this is only a hypothesis, but it's the best we've got as to the cause).