Groupwise 2012 HP1
Datasync 1.2.5 on SLES 10 server

Create an appointment in Groupwise, send appointment request to user with a Z10.

User on Z10 sees message come in via email with proper name and subject line in the Blackberry Hub. Tap the appointment to open it, and the following message is displayed

""The calendar could not recognize this meeting invitation"

The meeting does appear if I go into my Calendar, and can be viewed normally. It simply won't open when I try to open it via email in the Blackberry Hub.