dissappearing model

I load a metasequoia model into hamapatch, save it out as an x file. Load it into Blitz scale it down but it only appears from some angles. It's still there, can be collided with, but isn't visible. I'm certain there's something I'm leaving out of the pipeline . Any help?
Thanks

Happy Holidays!

Doggie

only appears from some angles? sounds strange. probably something with the camera range, maybe too close to the lense?

Also try entityfx mesh,16.