Fixed bug #1046599: String substitution cannot be done for translate() funciton and for QString type.

openlp/core/ui/advancedtab.py

@@ -686,7 +686,7 @@ class AdvancedTab(SettingsTab):
                 'Are you sure you want to change the location of the OpenLP '
                 'data directory to:\n\n%s\n\n'
                 'The data directory will be changed when OpenLP is closed.'
-                % new_data_path),
+                ).replace('%s', new_data_path),
             QtGui.QMessageBox.StandardButtons(
             QtGui.QMessageBox.Yes |
             QtGui.QMessageBox.No),

openlp/core/ui/mainwindow.py

@@ -1517,7 +1517,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
                     translate('OpenLP.MainWindow',
                     'Copying OpenLP data to new data directory location - %s '
                     '- Please wait for copy to finish'
-                    % self.newDataPath))
+                    ).replace('%s', self.newDataPath))
                 dir_util.copy_tree(old_data_path, self.newDataPath)
                 log.info(u'Copy sucessful')
             except (IOError, os.error, DistutilsFileError),  why:
@@ -1527,7 +1527,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
                     translate('OpenLP.MainWindow', 'New Data Directory Error'),
                     translate('OpenLP.MainWindow',
                     'OpenLP Data directory copy failed\n\n%s'
-                    % unicode(why)),
+                    ).replace('%s', unicode(why)),
                 QtGui.QMessageBox.StandardButtons(
                 QtGui.QMessageBox.Ok))
                 return False