Hi everyone, I have created my second mod, but for some reason, the mod is refuse to work. I use .sql this time just to see the difference between .xml and .sql. And I have this error, Code: [3700875.328] [Configuration]: Validating Foreign Key Constraints... [3700875.329] [Configuration]: Passed Validation. [3700895.904] [Gameplay] ERROR: table Resource_YieldChanges has no column named TerrainType [3700895.928] [Gameplay]: Validating Foreign Key Constraints... [3700895.942] [Gameplay]: Passed Validation. I have attached the mod in discussion.