1.3.1. General comments/problems

Overall here are problems found at this interoperability event test:

1. One vendor accepted our invite, but vendor became chair of the meeting and sent out at least 20 rescheduled notices.

2. There is an iCalendar invite from one vendor came in with a complicated RRULE, and we lost one instance when processing it.

3. One vendor user accepted our invite with an image, but the image lost when come to our Inbox

4. One vendor accepted our multiple reschedule events, and we receive error when opening one of those accepted notice

5. One vendor received error when trying to process our task invite. This is a long time, known issue.