Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Troubleshooting Errors on Story Editor Build

3.0.171.369 is indeed the latest version of the editor, though this is most likely a data issue. Which project dependencies does your project have (Story, Arena, Game Master)? You can see this in the Project settings window.

If you create a new Adventure project that only loads data from Story, are you able to build?