Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Troubleshooting [BUG] - Corruption: items not selectable anymore

If your local templates used custom root templates defined in the original project they might indeed become unselectable. Check your invalid objects panel.

Root templates are defined in "Data\Public\{ProjectName}\RootTemplates\". You could try copying those over to your new project.