Paper2D-Tilemap Component Generated at Runtime not Generating Collision

Now that i changed that in RebuildCollision() in PaperTileMapComponent.cpp im getting:

LogPhysics:Warning: AddBoxesToRigidActor: [/Game/Maps/UEDPIE_0_Map.Map:PersistentLevel.Tilemap_30.RenderComponent.PaperTileMap_63] BoxElems[1220] invalid or has invalid transform

(One for each collision) I guess im way over my head trying to edit engine code.