Google Calendar Bug?

Hi I keep getting an error message from the Operations window relating to Google Calendar. For multiple events I keep getting the message:

em error

This Em Client thread might help you.- Google Calendar Sync Error

Thanks but no luck. Still get the error message after removing and adding back the Google Account.

Can you upgrade to the latest version available in the Release History and see if there is any difference.

Still getting the error…

A little background information that might be relevant… I transferred from Thunderbird with Lightning and Provider for Google Calendar. Some of the events which trigger the previously mentioned error message have existed as weekly and monthly recurring events for years, I suspect this might be causing the errors.