glTF exporter: Fix some inv bind matrix

1 files changed, 8 insertions, 6 deletions

diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_extract.py b/io_scene_gltf2/blender/exp/gltf2_blender_extract.py
index cd58367d..84238305 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_extract.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_extract.py
@@ -669,12 +669,14 @@ def extract_primitives(glTF, blender_mesh, blender_vertex_groups, modifiers, exp
                     if modifiers is not None:
                         modifiers_dict = {m.type: m for m in modifiers}
                         if "ARMATURE" in modifiers_dict:
-                            armature = modifiers_dict["ARMATURE"].object
-                            skin = gltf2_blender_gather_skins.gather_skin(armature, export_settings)
-                            for index, j in enumerate(skin.joints):
-                                if j.name == vertex_group_name:
-                                    joint_index = index
-                                    break
+                            modifier = modifiers_dict["ARMATURE"]
+                            armature = modifier.object
+                            if armature:
+                                skin = gltf2_blender_gather_skins.gather_skin(armature, modifier.id_data, export_settings)
+                                for index, j in enumerate(skin.joints):
+                                    if j.name == vertex_group_name:
+                                        joint_index = index
+                                        break
 
                     #
                     if joint_index is not None: