First, I just wanted to thank Picotech for their improved support of Linux in their products. From my standpoint, this move puts you far ahead of the competition.
I am trying to build and run the PS3000con example on Linux Mint 17 with my 3205B. It builds fine, but when I run it, it always tells me "Device not found" (the handle returned by ps3000_open_unit() is 0), even though the usbtest scripts tells me it found the scope and the permissions are fine, and the Picoscope beta software works perfectly fine on the same PC.
Any idea where the problem might be?