diff --git a/game/addons/mesh_data_resource_editor/MIDGizmo.gd b/game/addons/mesh_data_resource_editor/MIDGizmo.gd
index f85ba1ee..724a6306 100644
--- a/game/addons/mesh_data_resource_editor/MIDGizmo.gd
+++ b/game/addons/mesh_data_resource_editor/MIDGizmo.gd
@@ -101,6 +101,9 @@ func redraw():
 	if !mdr:
 		return
 	
+	if mdr.array.size() != ArrayMesh.ARRAY_MAX:
+		return
+	
 	var handles_material : SpatialMaterial = get_plugin().get_material("handles", self)
 	
 	if vertices.size() == 0:
diff --git a/game/addons/mesh_data_resource_editor/UVEditor.gd b/game/addons/mesh_data_resource_editor/UVEditor.gd
index 7cc9eb0d..7b6e566a 100644
--- a/game/addons/mesh_data_resource_editor/UVEditor.gd
+++ b/game/addons/mesh_data_resource_editor/UVEditor.gd
@@ -20,6 +20,9 @@ func on_mdr_changed():
 func _draw():
 	if !mesh_data_resource:
 		return
+		
+	if mesh_data_resource.array.size() != ArrayMesh.ARRAY_MAX:
+		return
 	
 	var uvs : PoolVector2Array = mesh_data_resource.array[ArrayMesh.ARRAY_TEX_UV]
 	var indices : PoolIntArray = mesh_data_resource.array[ArrayMesh.ARRAY_INDEX]
diff --git a/game/test_mdr/Spatial.tscn b/game/test_mdr/Spatial.tscn
new file mode 100644
index 00000000..c47b9662
--- /dev/null
+++ b/game/test_mdr/Spatial.tscn
@@ -0,0 +1,15 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://modules/planets/test_planet/voxel_library/textures/grass_mossy_albedo.png" type="Texture" id=1]
+
+[sub_resource type="MeshDataResource" id=1]
+
+[sub_resource type="SpatialMaterial" id=2]
+albedo_texture = ExtResource( 1 )
+
+[node name="Spatial" type="Spatial"]
+
+[node name="MeshDataInstance" type="MeshDataInstance" parent="."]
+mesh_data = SubResource( 1 )
+texture = ExtResource( 1 )
+material = SubResource( 2 )