Factorio Forums

I was updating Factorio using auto-updater from 13.20 to 14.21. It started and finished download. Then the updater started and crashed.
I'm attaching log files.
Game won't start anymore.

Try removing your mods, you can just rename the mods-folder, it is in your application directory (see my signature).
If that does not do it, try the steps 1-4 here : viewtopic.php?f=7&t=9300

Hi, thanks for the report.
For some reason, updater was not able to overwrite Factorio executable in one of the update steps.

You'll have to reinstall Factorio to make it work again.