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
