Thanks for the quick reply. I'm happy to dump Outlook 2007 and to use Google Calendar instead, unfortunately I haven't been able to do so.
When I right click on my diary I get this:
The only option available is Outlook which if I select that opens this screen:
The drop down menu at the top is greyed out and inaccessible. When I bought clinic office, and the calendar sync module, Google calendar wasn't really a thing and Outlook was the only option. Was it called Outlook sync in 2009? Did the module get updated automatically along with the Clinic Office IV automatic upgrades?
Obviously as I reinstalled Clinic Office yesterday I have the latest version. Is my Clinic Office license stuck in 2009?
Maybe I'm missing something very simple. I did download Chrome with the Calendar add on in case Microsoft Edge was the problem. But still no joy.