Hi, MeshSplit is still failing on degeneare meshes with out warnings.
I think MeshSplit should automatically cull them as they have no area and thus no use and causes failing. If you disagree then I think Rhino should pop a warning and ask if it should cancel, procede or cull degenerade meshes first.
Take a look at the file, comments are in it.
Holo’s horse head mesh split bug-2.3dm (367.7 KB)