Outlook put an appointment in my calendar, and I can't delete it!

[dirtyknuckles]

Disclaimer - I'm running Zimbra Network Edition 4.5.11 on CentOS 4.5.

One of my users accepted an Outlook appointment in their default calendar, and now the calendar will not let the user delete that appointment. That appointment also prevents syncing or reading the calendar with any other ICAL or CalDAV clients.

I pasted the users calendar URL into Firefox and got the attached error. Tomcat complaines about "Unable to get calendar item notes MIME part" and craps out.

Is there any way to manually delete the appointment? or possibly, to delete the users entire default calendar?

Contrary to the error notice - there seems to be nothing noted in the tomcat stacktrace log (it's empty).

--------------------------
HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: system failure: Unable to get calendar item notes MIME part
com.zimbra.cs.service.UserServlet.doGet(UserServle t.java:287)
javax.servlet.http.HttpServlet.service(HttpServlet .java:689)
com.zimbra.cs.servlet.ZimbraServlet.service(Zimbra Servlet.java:152)
javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
com.zimbra.webClient.filters.SetHeaderFilter.doFil ter(SetHeaderFilter.java:276)

root cause

com.zimbra.common.service.ServiceException: system failure: Unable to get calendar item notes MIME part
com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:165)
com.zimbra.cs.mailbox.calendar.Invite.getDescripti on(Invite.java:720)
com.zimbra.cs.mailbox.calendar.Invite.getDescripti on(Invite.java:634)
com.zimbra.cs.mailbox.calendar.Invite.newToVCompon ent(Invite.java:1668)
com.zimbra.cs.mailbox.CalendarItem.appendRawCalend arData(CalendarItem.java:1617)
com.zimbra.cs.mailbox.Mailbox.getZCalendarForCalen darItems(Mailbox.java:2624)
com.zimbra.cs.service.formatter.IcsFormatter.forma tCallback(IcsFormatter.java:88)
com.zimbra.cs.service.formatter.Formatter$FormatOp eration.callback(Formatter.java:236)
com.zimbra.cs.operation.Operation.schedule(Operati on.java:180)
com.zimbra.cs.service.formatter.Formatter.format(F ormatter.java:77)
com.zimbra.cs.service.UserServlet.doAuthGet(UserSe rvlet.java:370)
com.zimbra.cs.service.UserServlet.doGet(UserServle t.java:279)
javax.servlet.http.HttpServlet.service(HttpServlet .java:689)
com.zimbra.cs.servlet.ZimbraServlet.service(Zimbra Servlet.java:152)
javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
com.zimbra.webClient.filters.SetHeaderFilter.doFil ter(SetHeaderFilter.java:276)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.15 logs.
Apache Tomcat/5.5.15