Exception in thread Thread-1

[fs264]

Hi after few seconds running fine, the script throws this error and it will stop reading from the mindwave. Any solution?

Thanks

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/home/pi/python/Mindwave/mindwave.py", line 73, in run
    self.parse_payload(payload)
  File "/home/pi/python/Mindwave/mindwave.py", line 143, in parse_payload
    raw=ord(value[0])*256+ord(value[1])
IndexError: string index out of range