GuiClockHud Not Appearing When Game Engine Restarted!

Hi, I have a small problem, I have added a GuiClockHud To my playGUI game screen! I saved it and it works fine, I also re-saved the mission! When I go back To the menu and reload the mission the clock is still there! But then if I exit out of the game engine and restart it and load the mission the timer is no longer there! I also checked in the playGUI.gui file and the clock is saved with canSaveDynamicFields="1", visible="1", canSave="1" Does anyone have any idea what might be doing wrong or not doing?