For the Word document that will not open in Pages, click once on that reluctant Word document in the Finder, and press command+i (Get Info). What is shown for the creation date? Word documents older than circa 2001 will be rejected by Pages, TextEdit, and Preview with "document name" can't be opened right now. Pages couldn't read the file. That message was from a Word .doc from 1995 (which I keep to produce this message).