Comment 5 for bug 1157193

Same here:

$ gnome-control-center -vvvvvvv
** (gnome-control-center:14845): DEBUG: Enabling debugging

(gnome-control-center:14845): accounts-glib-CRITICAL **: ag_provider_get_icon_name: assertion `provider != NULL' failed

(gnome-control-center:14845): GLib-GIO-CRITICAL **: g_icon_new_for_string: assertion `str != NULL' failed

(gnome-control-center:14845): credentials-cc-panel-CRITICAL **: cc_credentials_accounts_model_translucent_from_gicon: assertion `gicon != NULL' failed

(gnome-control-center:14845): accounts-glib-CRITICAL **: ag_provider_get_display_name: assertion `provider != NULL' failed
(gnome-control-center:14845): credentials-cc-panel-DEBUG: cc-credentials-account-details-page.vala:239: No configuration widget for provider flickr
credentials-cc-panel-Message: cc-credentials-account-applications-model.vala:156: No valid plugin found for application 'shotwell' with account '1'
(gnome-control-center:14845): credentials-cc-panel-DEBUG: cc-credentials-account-details-page.vala:239: No configuration widget for provider google
credentials-cc-panel-Message: cc-credentials-account-applications-model.vala:156: No valid plugin found for application 'shotwell' with account '2'
**
ERROR:empathy-user-info.c:252:fill_contact_info_grid: assertion failed: (spec != NULL)
Aborted (core dumped)
$ gnome-control-center --version
gnome-control-center 3.6.3
$ uname -a
Linux kermit 3.8.0-19-generic #30-Ubuntu SMP Wed May 1 16:35:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
$