Using the red abort button to stop a running vi is a brute action and should be never used for normal applications. I do not understand your explanation: if you use this vi as a top level vi, you should use it with proper stop button. If this is a subVI called from a main vi, I guess you run it for a predefined times using the for loop? This part is not clear. About the "stop" pr4000 subVI from the driver: you can connect it to an error output after the loop. But you do not have proper error handling either, this should be fixed, as I wrote before. The four subVI in your loop as you use it, does not make too much sense either: you try to read out four values in parallel. You do not understand how a FGV works: even if you placed these subVIs parallel, at once only one of them can be executed (non itinerant execution). So just place them in series, using a single error wire...
