ah yes, I see those triangle fans make it impossible. It works for the rest
Also - Isn’t all of Mesh+ user objects? I’m curious why it doesn’t run on Mac.
(edit - I think I figured out why - it looks like many of the M+ objects contain VB scripts, which have a few issues on Mac as mentioned here. Converting them to C# would probably avoid these problems. There are some automated converters like this which will do the bulk of the conversion, though they usually need a bit of manual fixing too for stuff like case-sensitivity)