I opted in to the 0.12.25 beta on Steam, verified my game files to force Steam to recognize the beta, and then launched Factorio. Once in game, I was prompted to login in order to update to 0.12.25, which I did. The auto-updater downloaded the zip file, performed the update, and then crashed at the "restarting factorio" step. (I think -- I wasn't 100% paying attention at this point.)
I've attached the logfile:
After I closed the dialogue box alerting me to the crash and asking me to submit a bug report, Factorio restarted and is apparently running 0.12.25. It seems to run just fine.
It could be a problem on my end, since I have the non-Steam version of Factorio installed (outside of Steam) because I couldn't get multiplayer to work with the Steam version.
[0.12.25][Steam] [pending] Crash after updating to 0.12.25
Re: [0.12.25][Steam] Crash after updating to 0.12.25
Are you sure you launched the Steam version? Because that version has the updater disabled, you won't get prompted to log in, or to update.