Alfter further research on web, found a suggestion to remove none MS add-ins
(snagIt) which seems to have done the trick...

"Milly Staples [MVP - Outlook]" wrote:

Outlook version please???

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, stu asked:

| After setting up a view with 2 or more calendars and then leaving the
| calendar tab (i.e. to email) and returning to calendar the mulit view
| is lost and only the default calendar is in view? Any way to make it
| retain the multi calendar view?