Adding Whittaker as biome graph gives error

Simply add the Whittaker demo as a biome graph and press play

Thread failed: System.Exception: Could not find Whittaker diagrams. Possibly generator is not initialized
at MapMagic.Nodes.Biomes.Whittaker200.Generate (MapMagic.Products.TileData data, MapMagic.Products.StopToken stop) [0x0005d] in \Assets\MapMagic\Generators\Biomes\Runtime\Whittaker.cs:169
at MapMagic.Nodes.Graph.GenerateRecursive (MapMagic.Nodes.Generator gen, MapMagic.Products.TileData data, MapMagic.Expose.Override ovd, MapMagic.Products.StopToken stop) [0x00265] in \Assets\MapMagic\Nodes\Graph.cs:917
at MapMagic.Nodes.Graph.Generate (MapMagic.Products.TileData data, MapMagic.Products.StopToken stop, MapMagic.Expose.Override ovd) [0x00047] in \Assets\MapMagic\Nodes\Graph.cs:856
at MapMagic.Nodes.Biomes.BiomesSet200.Generate (MapMagic.Products.TileData data, MapMagic.Products.StopToken stop) [0x00234] in \Assets\MapMagic\Generators\Biomes\Runtime\BiomesSet.cs:157
at MapMagic.Nodes.Graph.GenerateRecursive (MapMagic.Nodes.Generator gen, MapMagic.Products.TileData data, MapMagic.Expose.Override ovd, MapMagic.Products.StopToken stop) [0x00265] in \Assets\MapMagic\Nodes\Graph.cs:917
at MapMagic.Nodes.Graph.Generate (MapMagic.Products.TileData data, MapMagic.Products.StopToken stop, MapMagic.Expose.Override ovd) [0x00047] in \Assets\MapMagic\Nodes\Graph.cs:856
at MapMagic.Terrains.TerrainTile.Generate (MapMagic.Nodes.Graph graph, MapMagic.Terrains.TerrainTile tile, MapMagic.Terrains.TerrainTile+DetailLevel det, MapMagic.Products.StopToken stop) [0x00052] in \Assets\MapMagic\Terrains\TerrainTile.cs:716
at MapMagic.Terrains.TerrainTile+c__DisplayClass48_0.b__0 () [0x00000] in \Assets\MapMagic\Terrains\TerrainTile.cs:624
at Den.Tools.Tasks.ThreadManager.TaskThreadAction (Den.Tools.Tasks.ThreadManager+Task task) [0x00002] in \Assets\MapMagic\Tools\ThreadManager\ThreadManager.cs:138
UnityEngine.Debug:LogError (object)
Den.Tools.Tasks.ThreadManager:TaskThreadAction (Den.Tools.Tasks.ThreadManager/Task) (at Assets/MapMagic/Tools/ThreadManager/ThreadManager.cs:141)
System.Threading.ThreadHelper:ThreadStart ()