USRP2 Calibration - Error: LookupError: KeyError: Cannot find an item size:

[m0mik]

I am getting a "Error: LookupError: KeyError: Cannot find an item size:" error when attempting to calibrate a USRP2/CBX. The error occurs with all three of the calibration utilities since recently updating UHD and GNU Radio with pybombs:

$ uhd_cal_rx_iq_balance
linux; GNU C++ version 4.6.3; Boost_105300; UHD_003.007.000-123-g87b068ed
Creating the usrp device with: ...
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
-- Running calibration for CBX TX
-- Daughterboard serial: E7R05Y3XC
Error: LookupError: KeyError: Cannot find an item size:

UHD
Branch: master
Commit: 87b068e

GNU Radio
Branch: master
Commit: 76970d54f3a6551751d481c63ea54c0794fc2591

Mike

[dcajacob]

I'm seeing the same problem with a B210 on Ubuntu 14.04 x64

-- Operating over USB 2.
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 32 MHz
-- Actually got clock rate 32 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
thread[thread-per-block[0]: <block gr uhd usrp source (1)>]: LookupError: KeyError: Cannot find an item size:

[+] Selected device: GeForce GT 640M LE

[bhilburn]

A fix for this was merged for UHD-3.7.1.