Fix error on close

diff --git a/src/dialcentral_qt.py b/src/dialcentral_qt.py
index ca43da9..09bf799 100755 (executable)
--- a/src/dialcentral_qt.py
+++ b/src/dialcentral_qt.py
@@ -124,6 +124,7 @@ class Dialcentral(object):
                self._mainWindow.load_settings(config)
 
        def save_settings(self):
+               _moduleLogger.info("Saving settings")
                config = ConfigParser.SafeConfigParser()
 
                config.add_section(constants.__pretty_app_name__)
@@ -156,6 +157,7 @@ class Dialcentral(object):
 
        def _close_windows(self):
                if self._mainWindow is not None:
+                       self.save_settings()
                        self._mainWindow.window.destroyed.disconnect(self._on_child_close)
                        self._mainWindow.close()
                        self._mainWindow = None
@@ -164,13 +166,16 @@ class Dialcentral(object):
        @QtCore.pyqtSlot(bool)
        @misc_utils.log_exception(_moduleLogger)
        def _on_app_quit(self, checked = False):
-               self.save_settings()
-               self._mainWindow.destroy()
+               if self._mainWindow is not None:
+                       self.save_settings()
+                       self._mainWindow.destroy()
 
        @QtCore.pyqtSlot(QtCore.QObject)
        @misc_utils.log_exception(_moduleLogger)
        def _on_child_close(self, obj = None):
-               self._mainWindow = None
+               if self._mainWindow is not None:
+                       self.save_settings()
+                       self._mainWindow = None
 
        @QtCore.pyqtSlot()
        @QtCore.pyqtSlot(bool)