Excel 2003 Problem

A workbook no longer allows "move & copy" of a worksheet, either from within
the workbook, or from another book, preventing me from duplicating an
existing worksheet.

What is the problem and how do I fix it?


Notes:
-The various worksheets in the file were all created from a single worksheet
used as a template for the others.
- Did I bump up against some sort of move and copy limit? (i.e limit on
duplication of a single worksheet)
- Would excessive number, cell, and/or other formats somehow cause this
problem?
- The file contains numerous, but probably not an excessive amount of
hyperlinks.