diff --git a/project/code/TMV/Mission.cs b/project/code/TMV/Mission.cs
index 9dd4005..d509ae4 100644
--- a/project/code/TMV/Mission.cs
+++ b/project/code/TMV/Mission.cs
@@ -92,19 +92,28 @@ public partial class Mission : Node3D
 		ClearMap();
 
 		_textureLoader = new TextureLoader(_installPaths.famPath, FileName.GetBaseDir());
-
 		_file = new(FileName);
-		var textureList = (TxList)_file.Chunks["TXLIST"];
-		LoadTextures(textureList);
-		if (Dump) DumpTextureList(textureList);
-
-		var wr = (WorldRep)_file.Chunks["WREXT"];
-		BuildMeshes(wr.Cells, wr.DataHeader.LightmapFormat == 2);
+		UseChunk<TxList>("TXLIST", LoadTextures);
+		UseChunk<WorldRep>("WREXT", BuildWrMeshes);
 	}
 
-	private void BuildMeshes(WorldRep.Cell[] cells, bool lmHdr)
+	private void UseChunk<T>(string name, Action<T> action)
 	{
-		GD.Print($"HDR: {lmHdr}");
+		if (_file.Chunks.TryGetValue(name, out var value))
+		{
+			action((T)value);
+		}
+		else
+		{
+			GD.Print($"No chunk found/loaded: {name}");
+		}
+	}
+
+	private void BuildWrMeshes(WorldRep worldRep)
+	{
+		var cells = worldRep.Cells;
+		var lmHdr = worldRep.DataHeader.LightmapFormat == 2;
+		GD.Print($"HDR Lightmap: {lmHdr}");
 
 		var packingRects = new List<PackingRectangle>();
 		var surfaceDataMap = new Dictionary<int, MeshSurfaceData>();
@@ -345,6 +354,8 @@ public partial class Mission : Node3D
 				GD.Print($"Failed to load texture: {path}");
 			}
 		}
+
+		if (Dump) DumpTextureList(textureList);
 	}
 
 	private static void DumpTextureList(TxList textureList)