Can you write out a NURBS plane from Maya as an .igs file and see if it can read back in its own plane?

If so, then please zip that one that it can read up and post it here, I can take a look at it and try and see what might be different.

There are 2 different sort of ways to put surfaces into IGES files, I thought that most programs by now would support both ways but maybe Maya only will work with one particular way.

- Michael