2016-12-02 16:57:05,260 ERROR    root         In body of run_grab_lastpings.py
Traceback (most recent call last):
  File "/usr/local/currents/bin/run_grab_lastpings.py", line 69, in <module>
    data=extract_raw(infile, instname[:2], i0, i1, outfile=outfile, verbose=True)
  File "/usr/local/lib/python2.7/dist-packages/pycurrents/adcp/rdiraw.py", line 1479, in extract_raw
    rf.nprofs, rf.header.nbytes))
TypeError: %d format: a number is required, not NoneType