Re: [Evolution] Failed to open calendar “Contacts : Birthdays & Anniversaries” Invalid object

[Patrick O'Callaghan <poc usb ve>]

On Sun, 2020-03-22 at 09:44 +0000, John Murrell wrote:
> Hello,
>
> I am running Evolution 3.28.5-0ubuntu0.18.04.1  under Linux Mint 9.3
> Mate 64 Bit
>
> Evolution has been operating satisfactorily since I installed it in
> February until the last couple of days when I get the error 'Failed to
> open calendar “Contacts : Birthdays & Anniversaries” Invalid object'
> when I try to create a new entry in the calendar.
>
> There is one previous post in the archive that implies that turning the
> calendars off and on again cures it - I have tried this but it does not
> work in my case.
>
> I have looked at the dta file in
> /home/john/.local/share/evolution/calendar/system and the only file is
> 'calendar.ics' which Has Read - Wrirte permission for th eowner and
> read only for the others. Changing the group to read write does not
> cure it.
>
> Nothing on the internet for this error other than the one report in the
> archive as shown above.
>
> The 'Birthdays & Anniversarys still show in the calendar and can be
> turned on & off with the tick box so evolution still seems to be
> reading the data.
>
> The error occurs even if I turn off B&A and then try to create a new
> appointment.
>
> Can anyone help me on fixing this.

It's important to say how your calendar is configured. Is it local?
Does it use a server such as Google Calendar or Exchange?

poc