Okay I removed https://mods.factorio.com/mod/better-air-filtering and now I can save again. Superb!

Hopefully factorio devs can keep up the magic and fix this in some next update

Can I safely switch from my 0.18 version of the game with a lot of mods to a multiplayer 0.17.79 vanilla version of the game ?

I'm not the host of the multiplayer game, can I just everytime I want to play with my mate revert the update in Steam ?

And when I want to play solo I just update to 0.18 ...

Save

Broken save when I try to save now, this is what's generated in C:\Users\XXX\AppData\Roaming\Factorio\saves

Reproduce it by opening my save and trying to save, it crashes 100% of the time here

I updated my game from 0.17.79 to 0.18.x . I first updated to 0.18.15 but that didn't help either so tried the .x version but didn't help.

I can load my save I made in 0.17 just fine but I can't save it, it always crashes. I've tried it 5 times now, with different names or versions, didn't work.

I ...

I can't use SHIFT-F anymore to send the nearest heli to me.
This happened after I briefly installed this mod:
https://mods.factorio.com/mod/PersonalTeleporter

I installed that one, started researching it, then uninstalled it again. Now my heli can't get summoned again :mrgreen:

EDIT: the mod ...