Hi Martyn,
Thanks for the reply. I sent the e-mail to support@picotech.com

I see that no one in the community probably encountered this problem. Can someone from Picotech support pick it up please? It's kind of urgent I resolve this problem or abandon entirely. Thanks!

My 3206D with Linux library works. But, at unit power up, I usually get error 325. From the error list in the header file, I traced it to PICO_INTERNAL_ERROR. Why is this happening? I'm using Pico supplied USB 3.0 cable to a USB 3.0 USB port on my CPU board.