You are getting the Obsolete INI file error because the user is
attempting to use an old INI file. To avoid this be sure to place your
WTS in install mode before modifying the INI file. Then when done place
WTS back in execute mode. All changes to the INI file will then
replicate down to all users (who should each have their own INI file).
You should be placing your WTS in install mode when installing a package
(although using the Add/Remove Program does this for you behind the
Best of Luck,