Additional information on events not showing up:
I had to edit an event. The dates have changed. The old dates were in April and May. The old event appeared in the calendar correctly. (Created prior to 4.0.8.0) I edited the dates to 8 dates in May (1-4 & 22-25). Now the events do not appear in the calendar. (Not a big surprise, since this created new events. But thought it might be good for you to know.)