Can't synchronise KOrganizer Personal Calendar with Google Calendar

[Peter Wibberley]

In KOrganizer, I can select Configure.Calendars.Add and select Google Groupware and it opens a browser with a URL beginning https://accounts.google.com/o/oauth2/auth/oauthchooseaccount[1].  I can then select the relevant Google account and I get the page, "Akonadi Resources for Google Services wants additional access to your Google Account".  I can select Continue and get the page, "You can close this tab and return to the application now."

I can now see in KOrganizer the calendars that I have in Google Calendar.  I can then create an Event in KOrganizer in one of the Google Calendar calendars and it is (as one would expect) visible also in Google Calendar.  However, if I create and Event in KOrganizer /in Personal Calendar /then it does not synchronise with Google Calendar.

Is it not possible to synchronise KOrganizer Personal Calendar with Google Calendar?  Or am I doing something wrong?  It used to work for me a while ago but something seems to have changed in the meantime.  Any guidance very gratefully received.  

Many thanks and regards

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[1] https://accounts.google.com/o/oauth2/auth/oauthchooseaccount?client_id=554041944266.apps.googleusercontent.com&redirect_uri=http%3A%2F%2F127.0.0.1%3A42489&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.profile%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcalendar%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcalendar.events%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcontacts%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Ftasks%20https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email&response_type=code&service=lso&o2v=1&flowName=GeneralOAuthFlow
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