Multiple material libraries maybe?

[dt192]

`Traceback (most recent call last):
File "Blend2Halo2-Modified.py", line 534, in execute
return write_asset(context, self.filepath, triangulate_faces=self.triangulate_faces, split_flat=self.split_flat)
File "Blend2Halo2-Modified.py", line 322, in write_asset
file.write('\n{0}'.format(materials_list.index(mesh.materials[poly.material_index].name)))
AttributeError: 'NoneType' object has no attribute 'name'

location: :-1`

[General-101]

Upload the .blend file that causes this error

[dt192]

Seems to be when the material is parented to the object instead of the mesh.

error.zip

Confirmed. It's when the material is linked to the 'Object' rather than the 'Data'.

[General-101]

Ye, I see it. I'll need to update the script to work more like the JMS script to prevent this error.
This will take a while. Until then just set the material to be linked to the mesh.

[dt192]

Work around for this for anybody else having issues. There is an addon included with Blender called material utilities. Install that, hit shift+Q and change the links to data. It's not great, as it doesn't unlink the material from the object, so you end up with double linked material unless you manually unlink it from the parent, but it does at least make the ass exporter work as expected.