Hi Brian,

> As a ps, if you have used the hide function in MoI both the
> Iges and 3dm files in Carrara are likely to have lost
> surfaces.--very strange--Michael says it is a Carrara fault.

I remember you mentioning this before - these are likely to be tessellation errors in Carrara where it is having a hard time creating a polygon mesh object from some of the NURBS surfaces in the Iges or .3dm files.

If it cannot calculate the mesh (which is a pretty difficult task, it is not a surprising area to have difficulties in), then in the shaded mode in Carrara, it will appear as though the object is hidden because meshes are needed to display shaded objects.

Hiding an object in MoI at some earlier point, does not have anything to do with it, unless you still have it hidden at the time of export?

- Michael