[Yardstick one config issues]

what is causing these errors?

root@kali:~/rfcat_150225# sudo rfcat -r
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
Error in resetup():USBError(110, 'Operation timed out')
^CTraceback (most recent call last):
File "/usr/local/bin/rfcat", line 56, in <module>
interactive(ifo.index, DongleClass=RfCat, intro=intro)
File "/usr/local/lib/python2.7/dist-packages/rflib/__init__.py", line 190, in interactive
d = DongleClass(idx=idx)
File "/usr/local/lib/python2.7/dist-packages/rflib/chipcon_nic.py", line 295, in __init__
USBDongle.__init__(self, idx, debug, copyDongle, RfMode)
File "/usr/local/lib/python2.7/dist-packages/rflib/chipcon_usb.py", line 176, in __init__
self.resetup(copyDongle=copyDongle)
File "/usr/local/lib/python2.7/dist-packages/rflib/chipcon_usb.py", line 291, in resetup
self.setup(console, copyDongle)
File "/usr/local/lib/python2.7/dist-packages/rflib/chipcon_usb.py", line 229, in setup
iSN = do.getDescriptor(1,0,50)[16]
File "/usr/lib/python2.7/dist-packages/usb/legacy.py", line 289, in getDescriptor
return control.get_descriptor(self.dev, length, desc_type, desc_index)
File "/usr/lib/python2.7/dist-packages/usb/control.py", line 169, in get_descriptor
data_or_wLength = desc_size
File "/usr/lib/python2.7/dist-packages/usb/core.py", line 702, in ctrl_transfer
self.__get_timeout(timeout)
File "/usr/lib/python2.7/dist-packages/usb/backend/libusb1.py", line 596, in ctrl_transfer
timeout))
KeyboardInterrupt