Skin Problem - 3D Max - Need Help

[Lubbe]

im making a model in 3d Max but i having problem with the skin some objects dont want to show the skin it just gets gray and i know that you have to press the Blue cube before it shows. I edited the Poly's change the place of them can that be the problem? when i make a simpel box then it works but not when i edit the box. so any proposition?

 

[Mycklern]

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