diff --git a/GTG/backends/__init__.py b/GTG/backends/__init__.py
index d7b740e78f..ee797f19ac 100644
--- a/GTG/backends/__init__.py
+++ b/GTG/backends/__init__.py
@@ -32,7 +32,7 @@
 from GTG.backends.generic_backend import GenericBackend
 
 log = logging.getLogger(__name__)
-
+inactive_modules = set()
 
 class BackendFactory(Borg):
     """
@@ -67,10 +67,12 @@ def __init__(self):
                 # Something is wrong with this backend, skipping
                 log.warning("Backend %s could not be loaded: %r",
                             module_name, exception)
+                inactive_modules.append(module_name)
                 continue
             except Exception:
                 # Other exception log as errors
                 log.exception("Malformated backend %s:", module_name)
+                inactive_modules.append(module_name)
                 continue
 
         def browse_subclasses(cls):
diff --git a/GTG/gtk/backends/addpanel.py b/GTG/gtk/backends/addpanel.py
index b6b27320ff..7c6028af21 100644
--- a/GTG/gtk/backends/addpanel.py
+++ b/GTG/gtk/backends/addpanel.py
@@ -24,6 +24,8 @@
 from GTG.backends import BackendFactory
 from gettext import gettext as _, ngettext
 
+from GTG.backends import inactive_modules
+
 
 class AddPanel(Gtk.Box):
     """
@@ -170,7 +172,16 @@ def on_combo_changed(self, widget=None):
         """
         backend_name = self.combo_types.get_selected()
         if backend_name is None:
+            if 'backend_caldav' in inactive_modules:
+                markup = '<big>Error: Python package \'caldev\' not installed.</big>'
+                self.label_name.set_markup(markup)
+                return
+
+
+            markup = '<big>Error: An unknown backend could not be loaded.</big>'
+            self.label_name.set_markup(markup)
             return
+
         backend = BackendFactory().get_backend(backend_name)
         self.label_description.set_markup(backend.Backend.get_description())
 
diff --git a/GTG/gtk/backends/configurepanel.py b/GTG/gtk/backends/configurepanel.py
index e6a67b5939..4173534de5 100644
--- a/GTG/gtk/backends/configurepanel.py
+++ b/GTG/gtk/backends/configurepanel.py
@@ -16,7 +16,7 @@
 # this program.  If not, see <http://www.gnu.org/licenses/>.
 # -----------------------------------------------------------------------------
 
-from gi.repository import Gtk
+from gi.repository import Gtk, GLib
 
 from gettext import gettext as _
 from GTG.gtk.backends.parameters_ui import ParametersUI
@@ -139,7 +139,7 @@ def refresh_sync_button(self):
         """
         Refreshes the state of the button that enables the backend
         """
-        self.sync_button.set_sensitive(not self.backend.is_default())
+        self.sync_button.set_visible(not self.backend.is_default())
         if self.backend.is_enabled():
             label = _("Disable syncing")
         else:
@@ -151,7 +151,9 @@ def refresh_sync_status_label(self):
         Refreshes the Gtk.Label that shows the current state of this backend
         """
         if self.backend.is_default():
-            label = _("This is the default synchronization service")
+            xml_folder = GLib.filename_to_uri("/home/" + GLib.get_user_name() + "/.var/app/org.gnome.GTG/data/gtg/gtg_data.xml")
+
+            label = "This is the default file storage backend. <a href='{}'>{}</a>.".format(xml_folder, _("Open the XML data file"))
         else:
             if self.backend.is_enabled():
                 label = _("Syncing is enabled.")