I'm using 3D Studio Max 2012. I've got a simple mesh and several other polygons and I want to group everything all together. But the option is greyed out, I can't actually select 'Group' under the menus.
I've tried exploding and collapsing the mesh but nothing seems to work.
How can I group them together, what things can I do to try to diagnose the problem?
EDIT: My object hierarchy looks weird:
scene root: . object 1 model: - object 2 ... 99