diff --git a/openlp/core/lib/renderer.py b/openlp/core/lib/renderer.py
index 433018c23..5776874cc 100644
--- a/openlp/core/lib/renderer.py
+++ b/openlp/core/lib/renderer.py
@@ -159,7 +159,7 @@ class Renderer(object):
         doc = QtGui.QTextDocument()
         doc.setPageSize(QtCore.QSizeF(self._rect.width(), self._rect.height()))
         df = doc.defaultFont()
-        df.setPixelSize(self._theme.font_main_proportion)
+        df.setPointSize(self._theme.font_main_proportion)
         df.setFamily(self._theme.font_main_name)
         main_weight = 50
         if self._theme.font_main_weight == u'Bold':
diff --git a/openlp/core/lib/rendermanager.py b/openlp/core/lib/rendermanager.py
index 9caabdc69..6be26bd82 100644
--- a/openlp/core/lib/rendermanager.py
+++ b/openlp/core/lib/rendermanager.py
@@ -93,6 +93,7 @@ class RenderManager(object):
         """
         self.global_theme = global_theme
         self.theme_level = theme_level
+        self.themedata = None
 
     def set_service_theme(self, service_theme):
         """
@@ -102,6 +103,7 @@ class RenderManager(object):
             The service-level theme to be set.
         """
         self.service_theme = service_theme
+        self.themedata = None
 
     def set_override_theme(self, theme, overrideLevels=False):
         """
@@ -111,6 +113,10 @@ class RenderManager(object):
         ``theme``
             The name of the song-level theme. None means the service
             item wants to use the given value.
+
+        ``overrideLevels``
+            Used to force the theme data passed in to be used.
+
         """
         log.debug(u'set override theme to %s', theme)
         theme_level = self.theme_level
@@ -137,6 +143,7 @@ class RenderManager(object):
         if self.theme != self.renderer.theme_name or self.themedata is None \
             or overrideLevels:
             log.debug(u'theme is now %s', self.theme)
+            # Force the theme to be the one passed in.
             if overrideLevels:
                 self.themedata = theme
             else:
diff --git a/openlp/core/ui/servicemanager.py b/openlp/core/ui/servicemanager.py
index f2961b717..c7d3c497f 100644
--- a/openlp/core/ui/servicemanager.py
+++ b/openlp/core/ui/servicemanager.py
@@ -574,7 +574,7 @@ class ServiceManager(QtGui.QWidget):
         * An osd which is a pickle of the service items
         * All image, presentation and video files needed to run the service.
         """
-        log.debug(u'onSaveService')
+        log.debug(u'onSaveService %s' % quick)
         if not quick or self.isNew:
             filename = QtGui.QFileDialog.getSaveFileName(self,
             translate('OpenLP.ServiceManager', 'Save Service'),
@@ -755,6 +755,7 @@ class ServiceManager(QtGui.QWidget):
         """
         Set the theme for the current service
         """
+        log.debug(u'onThemeComboBoxSelected')
         self.service_theme = unicode(self.themeComboBox.currentText())
         self.parent.RenderManager.set_service_theme(self.service_theme)
         QtCore.QSettings().setValue(
@@ -767,6 +768,7 @@ class ServiceManager(QtGui.QWidget):
         The theme may have changed in the settings dialog so make
         sure the theme combo box is in the correct state.
         """
+        log.debug(u'themeChange')
         if self.parent.RenderManager.theme_level == ThemeLevel.Global:
             self.toolbar.actions[u'ThemeLabel'].setVisible(False)
             self.toolbar.actions[u'ThemeWidget'].setVisible(False)
@@ -779,6 +781,7 @@ class ServiceManager(QtGui.QWidget):
         Rebuild the service list as things have changed and a
         repaint is the easiest way to do this.
         """
+        log.debug(u'regenerateServiceItems')
         # force reset of renderer as theme data has changed
         self.parent.RenderManager.themedata = None
         if self.serviceItems:
@@ -800,6 +803,7 @@ class ServiceManager(QtGui.QWidget):
         ``item``
             Service Item to be added
         """
+        log.debug(u'addServiceItem')
         sitem = self.findServiceItem()[0]
         item.render()
         if replace: