Model disappears at random times

I have used PandaDirectX .X exporter for 3ds Max 9, and for some reason, when I look at my model from certain angles, it disappears from the viewport. The triangle and vertice count drops as if the model wasn’t even on screen. I’ve tried scaling it, using unshaded materials, using lit materials, and nothing seems to fix it. Could it be the exporter, or a problem with jME?

rather with the importer, call geometry.updateWorldBound() (or was it ModelBound?) after loading.

That fixed it! Thanks!