Oh! Just spotted something that may tell you the exact type of IGES file maya uses.

In the import options it's listed as:- IGES_DC

Hmm, I was hoping it might say something about "surface type 144" or "surface type 143"...

Give me just a bit here and I'll see if I can generate the other style surface, I'll post one here later for you to test with Maya.

- Michael

Hi Wibble, can you please try the attached test_plane.igs and see if Maya will read that one in?

This one uses the different style of surface.

If this one works, I should be able to make a setting for controlling which style of surface is written.

- Michael

Michael, there is a free PLE (Personal Learning Edition) of Maya, that you can download from Autodesk, maybe you got to have a copy for testing.

Yeah, I actually have an older PLE version (6.0) here right now, but it does not appear to have IGES import enabled for it...

Oops!

After doing a little rooting around with Google, I've managed to figure it out. It turns out that Maya needs to be told to load the IGS importer plugin from within its preferences. < Insert blush emoticon>

I can now load Moi nurbs AND your "test plane".

Thanks for your help, Michael!. I would've given up if you hadn't have made the "test plane". When that never worked I just knew it had to be something else.

Hi Wibble, I'm glad that it is working for you now!

Thanks for reporting back here, now I'll know what to tell someone else the next time this comes up.

- Michael