find_orphans.py Error

Please select from the following
 1. Delete orphaned recording entries
 2. Refresh list
> 1
The following recordings will be deleted


  Count:         156
Are you sure you want to continue?
> yes

Traceback (most recent call last):
  File "./find_orphans.py", line 230, in <module>
    main()
  File "./find_orphans.py", line 214, in main
    opt[1](opt[2])
  File "./find_orphans.py", line 129, in delete_recs
    rec.delete(True, True)
  File "/usr/lib/python2.7/site-packages/MythTV/dataheap.py", line 217, in delete
    except NoneType:
NameError: global name 'NoneType' is not defined