composite thickness remains zero

[Anonymous]

hello everyone.
In one project, all of the skin thickness appears as ZERO and cannot be changed. all the materials doesn't have thickness at all.
I try to set skin thickness of materials, but it remains zero. (Options>Element attributes>composites)
In other project it's OK.
Does anyone has a clue what I do wrong?
thanks for any help !

[Laszlo Nagy]

Maybe the file got damaged or corrupted in some way?
Can you duplicate the Composite and modify that? Then assign that copied Composite to elements?
Or, in AC17 you can delete the Composite (after creating a copy of it and modifying the copy) and you can set the deleted Composite to be changed to its copy. But this is a New Feature in AC17.

[Anonymous]

Thank you.
it seems that one of the templates got corrupted somehow.
when i try working with different one its OK.