RE: Calendar can't delete the calendar "TimeProfile" from the Exchange Server

Of course when it popped up - I tried to delete it.  I had to remove the account and re-add it, to get rid of the error messages about:

''Calendar can’t delete the calendar “TimeProfile” from the Exchange server.''

RED ALERT:  Ever since, my calendar syncing has come to a complete halt.   NOTHING is syncing!  There are events in my Exchange calendar -- but they no longer show up in my "Calendar".

Yosmite 10.10.2

Calendar 8.0 (2032.6.1)

Office365

HELP!!