Works for new users, but not existing

 I have a computer used by multiple users and PDF Creator was installed.  I've uninstalled an old version and reinstalled a newer one (0.9.7).  The administrator can print pdf's and newly created users (after the install of 0.9.7) can print pdf's but users that existed before cannot -- they don't get the pdfcreator window.

The registry entries for the HKCU\\Software\\PDFCreator key are identical for all users so I'm thinking this has something to do with the default profile or the "all users" profile on the pc.  Can anyone confirm?