[orca] Fix(ish) for bug 666594 - app-specific preferences broken: cannot be saved

[Joanmarie Diggs <joanied src gnome org>]

commit 758c0fe5c9e40a7705d09f10e26e3625fad44fee
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Thu Dec 22 13:51:58 2011 -0500

    Fix(ish) for bug 666594 - app-specific preferences broken: cannot be saved

 src/orca/app_prefs.py |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/app_prefs.py b/src/orca/app_prefs.py
index 94bfe4a..dbbb0a6 100644
--- a/src/orca/app_prefs.py
+++ b/src/orca/app_prefs.py
@@ -29,6 +29,7 @@ __license__   = "LGPL"
 
 import os
 
+import debug
 import orca_prefs
 import settings
 
@@ -90,7 +91,11 @@ class OrcaPrefs(orca_prefs.OrcaPrefs):
         """
 
         self._writeKeyBindingsPreamble(prefs)
-        self._iterateKeyBindings(prefs, treeModel)
+        try:
+            self._iterateKeyBindings(prefs, treeModel)
+        except:
+            debug.println(debug.LEVEL_FINEST, "FAILURE: _iterateKeyBindings")
+            debug.printException(debug.LEVEL_FINEST)
         self._writeAppKeyBindingsPostamble(prefs, appName, appScript)
 
     def _writePronunciationsPreamble(self, prefs):