OK the prob is with the mission itself ( Bulldog_2 ) , it crashes when loading it into the mission editor so can't fix it or even try. When it crashes during loading in the campaig itself, it creates a mission.bad xml file so it needs fixing somewhere. I was actually editing the Cheux mission before ( was having a *duh* moment lol ).
mission editor exception:
System.NullReferenceException: Object reference not set to an instance of an object.
at MissionEditor.Objects.BPSet.LoadFromXml(XmlElement node)
at MissionEditor.Objects.BPSetForUnit.LoadFromXml(XmlElement node)
at MissionEditor.Objects.MissionUnit.LoadFromXml(XmlElement nodeUnit)
at MissionEditor.Objects.MissionGroup.LoadFromXml(XmlElement nodeGroup)
at MissionEditor.Objects.MissionArmy.LoadFromXml(XmlElement parentNode)
at MissionEditor.Objects.Mission.LoadFromXml(XmlElement nodeMission)
at MissionEditor.Objects.Mission.LoadFromXml(String fileName)
at MissionEditor.Objects.Mission.LoadFromFile(String fileName)
at MissionEditor.Objects.Mission.OpenMission(String fileName)
at MissionEditor.EditorLogic.MissionSDI.OpenMission(String fileName)
at MissionEditor.Forms.MissionEditorControl.OnOpenMission(Object sender, EventArgs e)
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripButton.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
hope it helps