How did you generate this model?
The sequence looks ok, albeit it has no information other than its interval. I don't know why this is an issue for MdlVis.
The Matrix Eater error results from your vertices.
They are supposedly attached to matrix group 255 (presumably converted from -1).
The geosets have 0 matrix groups, and indeed the model has no bones in the first place.
To fix this, add a bone in Magos, and then add a matrix group for it and change the vertex groups. The latter two will probably be a lot easier to do with a text editor in MDL format. If you need help I can do this for you.
I reported this to Retera, since it is after all supported by the game, even if it's broken.