[orca] Get back to first start if config file is in old yaml format

[Joanmarie Diggs <joanied src gnome org>]

commit a542c9b797f65fc300f44614da75caa350e26b15
Author: Javier Hernández Antúnez <jhernandez emergya es>
Date:   Sun Feb 6 05:31:28 2011 +0100

    Get back to first start if config file is in old yaml format

 src/orca/backends/json_backend.py |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/orca/backends/json_backend.py b/src/orca/backends/json_backend.py
index 681f20d..f5b6477 100644
--- a/src/orca/backends/json_backend.py
+++ b/src/orca/backends/json_backend.py
@@ -2,7 +2,7 @@
 #
 # Copyright 2010-2011 Consorcio Fernando de los Rios.
 # Author: Juanje Ojeda Croissier <jojeda emergya es>
-# Author: Javier Hernández Antúnez <jhernandez emergya es>
+# Author: Javier Hernandez Antunez <jhernandez emergya es>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -85,7 +85,10 @@ class Backend:
     def _getSettings(self):
         """ Load from config file all settings """
         settingsFile = open(self.settingsFile)
-        prefs = load(settingsFile)
+        try:
+            prefs = load(settingsFile)
+        except ValueError:
+            return
         self.general = prefs['general'].copy()
         self.pronunciations = prefs['pronunciations']
         self.keybindings = prefs['keybindings']