[Skimmertalk] QS1R Failure? My turn in the barrel?

[N4ZR]

Today, I tried to get my QS1R running, for the first time in about 6 
months, and the first time since updating from Windows 7 to Windows 10. 
Everything appeared to start OK, the FPGA loaded fine. and Skimserv 
recognized the QS1R, but then things went downhill.  No decoders showed 
on Skimserv, and the green checkmark for SDR RX OK began to alternate 
with a red "X" and the ominous message "SDR failure: USB_bulk_read 
failed."  There's no sign of trouble with the LIBUSB driver or any of 
the USB hardware displayed by Device Manager.  I've power-cycled the 
receiver repeatedly,  and repeatedly reloaded the FPGA, all to no 
avail.  HDSDR also fails with "can't read from QS1R"

Has anyone else experienced this?  Any ideas on how to proceed, or is 
the RX toast?

-- 

73, Pete N4ZR
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