There could be any number of reasons, but before anyone can hazard a guess -
let alone offer a meaningful reply - you'll need to provide a more detailed
description of the circumstances.
Start with exact version numbers of Office & OS X, a description of the
document content, whether "document will not show up" means that the Print
Preview widow displays nothing at all or whether the document shows up (you
see the page) but displays no content.
Also, are you referring to Word's Print Preview or the preview in the Print
dialog? Is it a document you created or one you received from another
source? What else can you offer - without details our hands are tied.
Regards |:>)
Bob Jones
[MVP] Office:Mac