Thanks Jean-Luc,
I think you're on to something!
I do have MPLAB installed on both computers. On my previous post, I pasted the ldd from Ubuntu 14. When I ran ldd from Ubuntu 16 machine this morning, it points to a different libusb.so file (/lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007fb3b928f000)). I did quite a bit of hacking on that system last night, though, so let me try to get back to a clean slate and see if I can get it to work.

I also have some ARM cross compile toolchains installed, I'll have to see if those are "helping" too.
Thanks again,
Louis

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