Mirgrate script

Hi!

Just installed the latest version of Tvheadend. Coming from 3.5.247. When running the migrate-script, i get the following error:

root@htpcserver:/etc/tvheadend.test# ./conf_migrate.py .hts/tvheadend/
Traceback (most recent call last):
  File "./conf_migrate.py", line 529, in <module>
    nets = iptv_network(nets, opts)
  File "./conf_migrate.py", line 208, in iptv_network
    d   = json.loads(s)
  File "/usr/lib/python2.6/json/__init__.py", line 307, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.6/json/decoder.py", line 319, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.6/json/decoder.py", line 336, in raw_decode
    obj, end = self._scanner.iterscan(s, **kw).next()
  File "/usr/lib/python2.6/json/scanner.py", line 55, in iterscan
    rval, next_pos = action(m, context)
  File "/usr/lib/python2.6/json/decoder.py", line 183, in JSONObject
    value, end = iterscan(s, idx=end, context=context).next()
  File "/usr/lib/python2.6/json/scanner.py", line 55, in iterscan
    rval, next_pos = action(m, context)
  File "/usr/lib/python2.6/json/decoder.py", line 155, in JSONString
    return scanstring(match.string, match.end(), encoding, strict)
ValueError: Invalid control character at: line 6 column 33 (char 122)
root@htpcserver:/etc/tvheadend.test#

What to do?