grayed out "skeleton model"

In assembly mode in Proe 2001, I went to create a skeleton part and when the dialog box came up "skeleton model" was grayed out, note that
this has not been happening in Wildfire 2.0 and it seems that it has just been happening recently.
Any clues/suggestions?
TIA
Paul
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I am pretty sure that it has to do with a new license pack. When I updated mine recently in order to do an upgrade the licenses changed for no apparent reason. They have apparently combined some of the packages and eliminated others. Check the license that is specified when you run Pro/E.
Alternatively, you only have so many licenses that include skeleton modeling and somebody is using all of them.

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