May have learned this important lesson:
The 'flatlining' of the CCD camera may be entirely due to the 'running of two instances of LabView'. This occurs easily, it appears, if you close the VI for imaging while the Engineering Mode (EM) runs - or something like that: the danger is that an instance of Labview is started without you knowing it.
The danger is present when closing VIs. So, to guard against this, have the Task Manager running so that you can see whether you have more than one 'instance of LabView' running.
Also, you must have iBoot channel 5 ON when using any of the EM modes for controlling Filter Wheel, front Flap, Rear Flap, Side Flap, underside Flap or any other wonderful device on this telescope!