gistfile1.txt

[2012-02-14 12:06:43,033: ERROR/MainProcess] Task celery_tasks.import_upload.place_upload[f66700e8-34b5-4abc-ab6c-f5f0a30bb6a6] raised exception: TypeError("cannot concatenate 'str' and 'NoneType' objects",)
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/celery/execute/trace.py", line 150, in trace_task
    R = retval = task(*args, **kwargs)
  File "/home/ewencp/sirikata-cdn.git/sirikata-cdn/celery_tasks/import_upload.py", line 207, in place_upload
    (collada_obj, subfile_data, image_objs) = get_collada_and_images(zip, dae_zip_name, dae_data, subfiles, subfile_getter=eph_subfile_getter)
  File "/home/ewencp/sirikata-cdn.git/sirikata-cdn/celery_tasks/import_upload.py", line 108, in get_collada_and_images
    col = coll.Collada(StringIO(dae_data))
  File "/usr/local/lib/python2.6/dist-packages/collada/__init__.py", line 204, in __init__
    self._loadEffects()
  File "/usr/local/lib/python2.6/dist-packages/collada/__init__.py", line 365, in _loadEffects
    effect = material.Effect.load(self, {}, effectnode)
  File "/usr/local/lib/python2.6/dist-packages/collada/material.py", line 553, in load
    param = Surface.load(collada, localscope, paramnode)
  File "/usr/local/lib/python2.6/dist-packages/collada/material.py", line 229, in load
    if img is None: raise DaeBrokenRefError('Missing image ' + imgid)
TypeError: cannot concatenate 'str' and 'NoneType' objects