[Evolution] SOGo CardDAV Address Book

[Neil Romig <neilromig gmail com>]

Hi,

I am trying to get Evolution 3.8.4 working with a SOGo/MySQL CardDAV 
address book and CalDAV calendar setup. I am running a Mint16/Cinammon 
desktop.
I can read and write to the address book through Evolution's "WebDAV"
addressbook. There is a problem however when dealing with duplicate 
entries...

(1) I inadvertently try to add an existing entry (duplicate fullname and 
email address) Evolution just crashes giving this debug log:

<snip>
> (evolution:25418): GLib-GObject-WARNING **: cannot register existing type 'EABContactDisplay'
>
> (evolution:25418): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed
>
> (evolution:25418): libeutil-ERROR **: eab-contact-duplicate-detected.ui: Invalid type function on line 90: 
> 'eab_contact_display_get_type'

(2) I try to add an entry where the fullname is the same but the email 
address is different, Evolution hangs. The debug log shows:

<snip>
> (evolution:25526): GLib-GObject-WARNING **: cannot register existing type 'EABContactDisplay'
>
> (evolution:25526): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed
>
> (evolution:25526): GLib-GObject-WARNING **: invalid cast from 'EABContactDisplay' to '<invalid>'

Whether Evolution hangs or crashes seems to depend on something I 
haven't yet figured but it would be nice if Evolution either gave some 
indication that an address is already in the address book, or handled 
these errors in a graceful way. Does anyone know if it just because I 
and not using WebDAV and CardDAV is not well implemented?

Neil.