glTF exporter: fix crash using full collection hierarchy export

scripts/addons_core/io_scene_gltf2/__init__.py

@@ -5,7 +5,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (4, 2, 69),
+    "version": (4, 2, 70),
     'blender': (4, 2, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

scripts/addons_core/io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py

@@ -175,7 +175,8 @@ class VExportTree:
         # add to parent if needed
         if parent_uuid is not None:
             self.add_children(parent_uuid, node.uuid)
-            if self.nodes[parent_uuid].blender_type == VExportNode.INST_COLLECTION or original_object is not None:
+            if (self.nodes[parent_uuid].blender_type == VExportNode.INST_COLLECTION or original_object is not None) or (self.nodes[parent_uuid].blender_type !=
+                                                                                                                        VExportNode.COLLECTION and self.nodes[parent_uuid].blender_object is not None and self.nodes[parent_uuid].blender_object.is_instancer is True):
                 self.nodes[parent_uuid].children_type[node.uuid] = VExportNode.CHILDREN_IS_IN_COLLECTION if is_children_in_collection is True else VExportNode.CHILDREN_REAL
         else:
             self.roots.append(node.uuid)