Whats does "Feature is invalid" means?
 

Hi all,

I have been trying to create a skin with the following lines.

Attachment 17972

But whenever i tried to create a skin, it will gives me an error saying that the feature is invalid.

What does this error means?

I don't understand why it can't create a skin with just 4 lines.

What can i do to resolve this problem?

Thank you very much.

Best regard,
natur3

Im sorry, but i don't understand.