Still not right though as:
1. If I try and edit the entry by opening up the event and then save & close, the entry vanishes.
2. If I try and switch calendars and then enter even directly onto the calendar itself it jumps back to the first calendar.
It's really not a happy programme at all! The only editing it acknowledges is directly onto the calendar using text editing and the ENTER key.
Any ideas how I could maybe reload this without it affecting all my mail that I've got working well now?