<<< Welcome to GNU Radio Companion 3.7.11.1 >>>

Block paths:

C:\Program Files\GNURadio-3.7\share\gnuradio\grc\blocks

Loading: "C:\Users\JoseM\Documents\GNU\test w grc.grc"

>>> Done

Generating: 'C:\\Users\\JoseM\\Documents\\GNU\\top_block.py'

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

Win32; Microsoft Visual C++ version 14.0; Boost_106000; UHD_003.010.001.001-0-unknown

gr-osmosdr c653754d (0.1.5git) gnuradio 3.7.11.1

built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf airspy redpitaya 

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.

Anybody have any idea how to fix this ?

Thanks,

Jose