Ensure you're playing the latest version of the Millennium Dawn mod. You can check for updates on the mod's official website or on the Hearts of Iron IV forums.

If you have multiple mods installed, try disabling them one by one to see if it resolves the crash issue.

Hearts of Iron IV, a grand strategy game developed by Paradox Development Studio, has been a favorite among gamers since its release in 2016. The game's complex gameplay, rich historical context, and extensive modding community have made it a staple of the strategy gaming genre. However, some players have been experiencing crashes while playing the game, particularly with the Millennium Dawn mod. In this article, we'll explore the possible causes of these crashes and provide a step-by-step guide on how to fix them in 2021.