I keep receiving error code 19124 and am unsure how to fix this.  I am designated as a delegate on the MS outlook exchange account.  When I send a meeting invitation, the meeting request does not appear on the calendar of the person I am delegated to (even after I have accepted the request for the person I am delegated to).  Error details state, "This meeting was removed from the calendar, or a response to a more recent update was sent in another e-mail session."

This appears to only be an issue when I send out the meeting invitation; for others that I am not delegated to, the meeting requests appear on their calendars.

Any help is really appreciated.