diff --git a/Assets/Scripts/OpenTS2/Content/DBPF/Scenegraph/ScenegraphModelAsset.cs b/Assets/Scripts/OpenTS2/Content/DBPF/Scenegraph/ScenegraphModelAsset.cs
index e5da95d..7d8179c 100644
--- a/Assets/Scripts/OpenTS2/Content/DBPF/Scenegraph/ScenegraphModelAsset.cs
+++ b/Assets/Scripts/OpenTS2/Content/DBPF/Scenegraph/ScenegraphModelAsset.cs
@@ -223,7 +223,6 @@ namespace OpenTS2.Content.DBPF.Scenegraph
                     // 3rd delta map.
                     var deltaMapIdx = (3 - byteIdx);
                     Debug.Assert(deltaMapIdx < vertexPosDeltas.Length);
-                    Debug.Assert(deltaMapIdx < vertexNormDeltas.Length);
                     var morphTarget = morphTargets[(int)vertexMapByte];
 
                     if (animations[vertexMapByte] == null)
@@ -232,7 +231,11 @@ namespace OpenTS2.Content.DBPF.Scenegraph
                     }
 
                     animations[vertexMapByte].VertexPositionDeltas[i] = vertexPosDeltas[deltaMapIdx].Data[i];
-                    animations[vertexMapByte].VertexNormalDeltas[i] = vertexNormDeltas[deltaMapIdx].Data[i];
+                    // Optionally the normal morph might be defined.
+                    if (deltaMapIdx < vertexNormDeltas.Length)
+                    {
+                        animations[vertexMapByte].VertexNormalDeltas[i] = vertexNormDeltas[deltaMapIdx].Data[i];
+                    }
                 }
             }
 
diff --git a/Assets/Scripts/OpenTS2/Engine/Tests/ScenegraphGMDCTest.cs b/Assets/Scripts/OpenTS2/Engine/Tests/ScenegraphGMDCTest.cs
index e1cdd51..2973b6a 100644
--- a/Assets/Scripts/OpenTS2/Engine/Tests/ScenegraphGMDCTest.cs
+++ b/Assets/Scripts/OpenTS2/Engine/Tests/ScenegraphGMDCTest.cs
@@ -16,7 +16,7 @@ public class ScenegraphGMDCTest : MonoBehaviour
             Filesystem.GetPackagesInDirectory(Filesystem.GetDataPathForProduct(ProductFlags.BaseGame) + "/Res/Sims3D"));
 
         var resource = contentProvider.GetAsset<ScenegraphResourceAsset>(
-            new ResourceKey("chairReclinerPuffy_cres", GroupIDs.Scenegraph, TypeIDs.SCENEGRAPH_CRES));
+            new ResourceKey("puFace_cres", GroupIDs.Scenegraph, TypeIDs.SCENEGRAPH_CRES));
 
         Debug.Log($"scenegraphModel: {resource.GlobalTGI}");
         var gameObject = resource.CreateRootGameObject();
diff --git a/Assets/Scripts/OpenTS2/Rendering/MaterialManager.cs b/Assets/Scripts/OpenTS2/Rendering/MaterialManager.cs
index 42986b0..12eb44a 100644
--- a/Assets/Scripts/OpenTS2/Rendering/MaterialManager.cs
+++ b/Assets/Scripts/OpenTS2/Rendering/MaterialManager.cs
@@ -29,6 +29,7 @@ namespace OpenTS2.Rendering
             RegisterMaterial<PhongTextureMaterial>();
 
             RegisterMaterial<SimSkinMaterial>();
+            RegisterMaterial<SimStandardMaterial>();
 
             // Ideally we'd just disable the mesh renderer to save a draw call but Maxis had to make it weird of course.
             // Could maybe have an ApplyToRenderer(MeshRenderer, MaterialDef) function that does just that if the material def is Null instead.
diff --git a/Assets/Scripts/OpenTS2/Rendering/Materials/SimStandardMaterial.cs b/Assets/Scripts/OpenTS2/Rendering/Materials/SimStandardMaterial.cs
new file mode 100644
index 0000000..92728e1
--- /dev/null
+++ b/Assets/Scripts/OpenTS2/Rendering/Materials/SimStandardMaterial.cs
@@ -0,0 +1,7 @@
+namespace OpenTS2.Rendering.Materials
+{
+    public class SimStandardMaterial : StandardMaterial
+    {
+        public override string Name => "SimStandardMaterial";
+    }
+}
\ No newline at end of file
diff --git a/Assets/Scripts/OpenTS2/Rendering/Materials/SimStandardMaterial.cs.meta b/Assets/Scripts/OpenTS2/Rendering/Materials/SimStandardMaterial.cs.meta
new file mode 100644
index 0000000..e1e0eb2
--- /dev/null
+++ b/Assets/Scripts/OpenTS2/Rendering/Materials/SimStandardMaterial.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 4b25adaa292949a5a9ae02a93159de09
+timeCreated: 1691541379
\ No newline at end of file