Some customers reported that after installation of SP1 for Inventor Publisher 2012, the Publisher Word add-in does not work anymore. The Autodesk development team is addressing currently this issue. There is a temporary solution at this time.
You can apply this manual fix:
1. Uninstall the Inventor Publisher 2012 Word add-in from Control pannel (Only the Word add-in).
2. From the Publisher 2012 install media browse to \x64/x86\Inventor Publisher\ProgFiles\Autodesk\Inventor Publisher 2012
3. Look for the file Autodesk.Catalyst.Novastar.PlugIns.WordAddin.vsto
4. Double click and Run this application