bind_xml issue

[Matty9191]

I am getting the following traceback when I attempt to run bind_xml by hand:

Traceback (most recent call last):
File "bind_xml.py", line 244, in
main(sys.argv[1:])
File "bind_xml.py", line 232, in main
v = d'call_back'
File "bind_xml.py", line 123, in get_metric_value
self.update_stats()
File "bind_xml.py", line 108, in update_stats
self.get_bind_reader().get_stats()
File "/usr/lib/python2.7/site-packages/pybindxml/reader.py", line 51, in get_stats
self.stats = XmlV22(self.bs_xml)
File "/usr/lib/python2.7/site-packages/pybindxml/reader.py", line 102, in init
super(XmlV22, self).init(xml)
File "/usr/lib/python2.7/site-packages/pybindxml/reader.py", line 68, in init
self.zone_stats = self.set_zone_stats()
File "/usr/lib/python2.7/site-packages/pybindxml/reader.py", line 142, in set_zone_stats
serial = int(zone.find('serial').string)
ValueError: invalid literal for int() with base 10: '-'

Is this a known issue?