CXTPCalendarEvents::RemoveAll making my app crash

CXTPCalendarEventsPtr cEvents = GetDataProvider()->RetrieveDayEvents(COleDateTime::GetCurrentTime());
for (int i = 0; i < cEvents->GetCount(); i++)
{
     CXTPCalendarEvent *p = cEvents->GetAt(i);
     //here I copy the usefull data for me (subject, end and start time in my class with .GetSubject .GetStartTime .GetEndTime
}
cEvents->RemoveAll();

the RemoveAll member produces a unhandled exeption and makes the program crash... If i comment the line the program crashes when the program finishes (when CXTPCalendarEvents destructor is invoked).. Is there any way to solve this?
thx