Google Calendar sync issue - "un-representable DateTime"

All the time my eMClient syncs with one of my Google Caldendars, I get the following error

[Google Calendar] Az elemek feltöltése “…/Naptár” mappába a következő hiba miatt nem sikerült: The added or subtracted value results in an un-representable DateTime. (Parameter ‘value’)

The first part translates to someting like uploading elements into “MyCalendar” folder failed due to the following error.

It is very annoying. I should find somehow the element causing the problem, but how to locate it? I have so many calendar items from the past few years, how could I locate the wrong one?

You can right-click on the Gmail Calendar folder and choose Properties > Repair > Repair. That will remove any data that was pending upload to the server that is causing the issue, and resync the calendar from the server.

Thank you, Gary, it looks like this solved the problem.