Hi all,

I am an amateur radio astronomy enthusiast and I've been using an RTL-SDR 
(R820T) USB dongle for my projects; up until now I had been using a Windows 8.1 
laptop, but that one is on the blink right now so I've switched to a Windows 10 
computer. I've tried to plug in my SDR and run the flowgraph (attached), but I 
keep getting the output below:

Generating: 'C:\\Users\\Deana White\\Documents\\top_block.py'

Executing: C:\Program Files\GNURadio-3.7\gr-python27\python.exe -u 
C:\Users\Deana White\Documents\top_block.py

Win32; Microsoft Visual C++ version 14.0; Boost_106000; 

gr-osmosdr c653754d (0.1.5git) gnuradio
built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf airspy 
Using device #0 Generic RTL2832U OEM
usb_open error -12

FATAL: Failed to open rtlsdr device.

Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.

gr::pagesize: no info; setting pagesize = 4096

I've run zadig for the RTL-SDR, and it works just fine with SDR#. Do you have 
any advice as to why I might be having this problem with the GNURadio flowgraph?

Thanks very much! Have a great evening and take care,


Attachment: rtl-sdr.grc
Description: rtl-sdr.grc

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