Python ctypes program works on 3.2 but fails on 3.4

Hello List

I suspect a bug in ctypes;
I asked the question below on stackoverflow:
http://stackoverflow.com/questions/32100067/python-ctypes-program-works-on-3-2-but-incompatiable-on-3-4

Any idea of why the same code would fail (return a blank string) on 3.4?

Thanks
TR

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