handle tourney not found

pyfpdb/GuiTourneyViewer.py

@@ -60,6 +60,11 @@ class GuiTourneyViewer (threading.Thread):
     def displayClicked(self, widget, data=None):
         if self.prepare(10, 9):
             result=self.db.getTourneyInfo(self.siteName, self.tourneyNo)
+            if result[1] == None:
+                self.table.destroy()
+                self.errorLabel=gtk.Label("Tournament not found - please ensure you imported it and selected the correct site")
+                self.mainVBox.add(self.errorLabel)
+            else:
                 x=0
                 y=0
                 for i in range(1,len(result[0])):