As of version 3.0.0, we no longer support files with the old
MATT chunk. If you wish to use v3.0.0, please open your file in the latest version of MagicaVoxel and resave - this should switch you over to the newer dictionary-based
MATL chunks. Alternatively, continue to use v2.0.0.
I'm not currently using MagicaVoxel, so am not keeping up with developments in the file format. If there are any missing features, or problems loading more recent files, please don't hesitate to open an issue. I'll try to get back to you within a day or two!
Kindly hosted over at https://docs.rs/dot_vox/.
As a maintainer, its always nice to get bug reports and (even better) pull requests. Thanks go to all of the following for doing just that!