traceback (most recent call last):
  File "/usr/local/bin/dae_to_red", line 9, in <module>
    load_entry_point('dae-to-red==0.0.0', 'console_scripts', 'dae_to_red')()
  File "build/bdist.linux-x86_64/egg/dae_to_red/main.py", line 353, in main
  File "build/bdist.linux-x86_64/egg/dae_to_red/main.py", line 316, in convert_file
  File "build/bdist.linux-x86_64/egg/dae_to_red/colladamunge.py", line 216, in get_object_id_to_node_dict
AttributeError: 'NoneType' object has no attribute 'rstrip'