I am working on bladeRF, dose anyone working on it and facing this error?
Ubuntu 13.04
linux; GNU C++ version 4.7.3; Boost_105300; UHD_003.005.004-140-gfb32ed16

<<< Welcome to GNU Radio Companion 3.7.1 >>>

i got this error while running osmocom_fft.

junaid@Junaid:~/gnuradio/gr-osmosdr$ osmocom_fft -a 
bladerf=0,fpga=/opt/bladeRF/fpga/hostedx115.rbf -s 8000000 -f 446000000
linux; GNU C++ version 4.7.3; Boost_105300; UHD_003.005.004-140-gfb32ed16

gr-osmosdr v0.1.0-23-g6f4e16ff (0.1.1git) gnuradio 3.7.1
built-in source types: file fcd rtl rtl_tcp uhd hackrf 

FATAL: Failed to open HackRF device (-5) HACKRF_ERROR_NOT_FOUND

Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to a gnuradio bug. The maintainers have been informed.

Source has no sample rates (wrong device arguments?).
 
BLADERF CLI info
////////////////////////////////////////////////////////////////////////////////////////
bladeRF> load fpga /opt/bladeRF/fpga/hostedx115.rbf 
Loading fpga from /opt/bladeRF/fpga/hostedx115.rbf...
Done.
bladeRF> info

  Serial #:                 5cc7c3a07c529478308a9d5424965eb0
  VCTCXO DAC calibration:   0x99d1
  FPGA size:                115 KLE
  FPGA loaded:              yes
  USB bus:                  3
  USB address:              2
  Backend:                  libusb
  Instance:                 0

bladeRF> version

  bladeRF-cli version:        0.5.0-git-130cbba
  libbladeRF version:         0.6.2-git-130cbba

  Firmware version:           1.5.3-git-
  FPGA version:

GR-OSMOCOM enabled components 

-- 
-- ######################################################
-- # gr-osmosdr enabled components                         
-- ######################################################
--   * Python support
--   * Osmocom IQ Imbalance Correction
--   * FUNcube Dongle
--   * IQ File Source
--   * Osmocom RTLSDR
--   * RTLSDR TCP Client
--   * Ettus USRP Devices
--   * HackRF Jawbreaker
--   * nuand bladeRF
-- 
-- ######################################################
-- # gr-osmosdr disabled components                        
-- ######################################################
--   * sysmocom OsmoSDR
--   * FUNcube Dongle Pro+
--   * Osmocom MiriSDR
-- 
-- Building for version: v0.1.0-23-g6f4e16ff / 0.1.1git
-- Using install prefix: /opt/gnuradio-3.7.1git
-- Configuring done
-- Generating done
-- Build files have been written to: /home/junaid/gnuradio/gr-osmosdr


Regards
Muhammad Junaid
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