I really wasn't sure if I should have put this in one of the fallout forums, but here it goes. I was recently using the newest commit from github and tried to export a nif file with mopp collision, and it gave me an error. so I tried to look in the code to fix it, and I got a little ways by replacing * with @ at lines 524, 531, and 534 in the (io_scene_nif/modules/nif_export/collision/havok.py). But now I am getting the errors: Traceback (most recent call last): File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\operators\nif_export_op.py", line 159, in execute return nif_export.NifExport(self, context).execute() File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\nif_export.py", line 172, in execute root_block = self.objecthelper.export_root_node(self.root_objects, filebase) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\object\__init__.py", line 112, in export_root_node n_root = self.export_node(b_obj, None) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\object\__init__.py", line 218, in export_node self.export_children(b_obj, node) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\object\__init__.py", line 233, in export_children self.export_node(b_child, n_parent) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\object\__init__.py", line 173, in export_node if self.export_collision(b_obj, n_parent): File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\object\__init__.py", line 254, in export_collision self.bhk_helper.export_collision_helper(b_obj, node) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\collision\havok.py", line 126, in export_collision_helper self.export_collision_packed(b_obj, n_col_body, layer, n_havok_mat) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\modules\nif_export\collision\havok.py", line 539, in export_collision_packed n_col_shape.add_shape(triangles, normals, vertices, layer, havok_mat.material) File "C:\Users\Jim\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\io_scene_nif\dependencies\pyffi\formats\nif\__init__.py", line 2997, in add_shape self.sub_shapes[num_shapes].material.material = material AttributeError: 'int' object has no attribute 'material' location: <unknown location>:-1 Weird thing is that it imports just fine, but I am not sure if I should have said this here.