calendars crashing

I cannot access calendars. 
every time I click on calendars at the bottom left of the main screen i get a fatal error.  The error diagnostics start by referring to an invalid date field.
I have a year’s worth of appointments in my calendar
How do I get them back?
thanks
tom

Hi,

There is an update fixing this particular issue, you can download it here: http://www.emclient.com/dist/v6.0.249…