I have Windows 8 Pro OS. I installed classic shell when it came out. Downloaded the latest ProntoProEdit NG 2.1.8.0. I can't install it using compatibility as Windows 7, Program starts to install and tells me can't install on this OS. It will install as compatibility XP, but then the drivers do not install. So I can't upload or download using the USB. Can do everything in the program except upload and download. So my question is which compatibility OS did you install?