Screwed up Objects

Can you guys check this for me.

It seems to show on PC Chrome & Edge ok, and on Mac Firefox is ok, but on Mac Chrome & Safari, it shows up like the cover image. It is doing this on many fbx & slt objects I load. Any idea why this is failing? It uses 144 and js version not jsm. I could see if all failed but only to have 2 fail confuses me

Thanks for the help