The game exits soon after startup.

Sorry to hear about this. I am not seeing any indications of what may be causing the crash from the logs. That said, if disabling mods did not resolve the issue, could we get you to temporarily delete all mod files from your Steam folder for Don't Starve Together? Once all mod files have been deleted from your Steam folder for the game, unsubscribe all of your Don't Starve Together mods from the Steam Workshop, then try launching the game once more to see if that resolves it.

If the issue persists after trying the step listed above, please see our troubleshooting guide: https://support.klei.com/hc/en-us/articles/360029555352 

Additionally, if the game is not launching on Steam after you see the message "Preparing to Launch...." please follow the troubleshooting steps provided on Steam's Support page: https://help.steampowered.com/en/faqs/view/5814-D9A3-BE42-62DF 

Finally, please ensure that there are no programs running in the background that may interfere with or conflict with the games' and Steam's processes: https://support.steampowered.com/kb_article.php?ref=9828-SFLZ-9289