Hello, I have a user with a calendar issue. When she logs in and selects the mobile interface, her calendar does not display. At the top of the calendar, it says 'an invalid request was made' in a red backgrounded banner. No events show up. She is using mobile on her iPhone, but it does the same thing when using firefox on her desktop and selecting 'mobile'.

We are using Zimbra 5.0.9. This is the only account in our domain that is having this issue. I would guess that there is a corrupted calendar event of some kind. Anyone seen this, or have a fix?