osmo-trx USRP error

linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0-unknown

opening configuration table from path :memory:
Info: SSE3 support compiled in and supported by CPU
Info: SSE4.1 support compiled in, but not supported by CPU
Config Settings
   Log Level............... NOTICE
   Device args............. serial=E2R15U8B1
   TRX Base Port........... 5700
   TRX Address............. 127.0.0.1
   GSM Core Address.........127.0.0.1
   Channels................ 1
   Tx Samples-per-Symbol... 4
   Rx Samples-per-Symbol... 1
   EDGE support............ Disabled
   Reference............... Internal
   C0 Filler Table......... Dummy bursts
   Multi-Carrier........... Disabled
   Tuning offset........... 0
   RSSI to dBm offset...... 0
   Swap channels........... 0

-- USRP-B100 clock control: 10
--   r_counter: 2
--   a_counter: 0
--   b_counter: 20
--   prescaler: 8
--   vco_divider: 5
--   chan_divider: 5
--   vco_rate: 1600.000000MHz
--   chan_rate: 320.000000MHz
--   out_rate: 64.000000MHz
--
-- Loading FPGA image: /usr/share/uhd/images/usrp_b100_fpga.bin... done
-- Transceiver active with 1 channel(s)



NOTICE 139805836887808 17:05:26.2 Transceiver.cpp:791:driveControl: Changing TSC from 0 to 7
WARNING 139805836887808 17:05:26.2 Transceiver.cpp:820:driveControl: bogus command SETFORMAT on control interface.
NOTICE 139805836887808 17:05:26.2 Transceiver.cpp:244:start: Starting the transceiver
ERR 139805703104256 17:05:26.3 UHDDevice.cpp:844:check_rx_md_err: An internal receive buffer has filled at 104.424 sec.
ERR 139805703104256 17:05:26.3 UHDDevice.cpp:844:check_rx_md_err: An internal receive buffer has filled at 104.424 sec.
ERR 139805703104256 17:05:26.3 UHDDevice.cpp:1383:write: Skipping buffer data: timestamp=41772016 time_end=41768433
ERR 139805703104256 17:05:26.3 UHDDevice.cpp:1383:write: Skipping buffer data: timestamp=41772016 time_end=41768433