iCalendar request performs differently in outlook 2002 than outlook 2003

[AguilaEagle]

I use a program that uses SMTP services running on
windows 2000 to send meeting request to users as a
iCalendar request (ics attachment). Anyone that is using
Outlook XP who replys to the request, the orginizer will
get the response. If the same recipient uses Outlook
2003, and replys the appointment is added to their
calendar, but the orginizer never gets the response.
Also in Outlook 2003 the "Propose New Time" button is
grayed out. What is causing the differnet behavior?

 

[Sue Mosher [MVP-Outlook]]

Can you post an example of such an iCal item? I've been tracking several
little oddities, but I'm not sure I've seen the one you describe.