cbdocloader dumps stack trace on auth / 401 errors

on mac build 1939

/cbdocloader -n 127.0.0.1:8091 -b gamesim-sample -s 100 /Users/ronnie/Downloads/couchbase-server-community_x86_64_2.0.0-1939-rel/Couchbase\ Server.app/Contents/Resources/couchbase-core/bin/../samples/gamesim-sample.zip

{'username': None, 'node': '127.0.0.1:8091', 'password': None, 'bucket': 'gamesim-sample', 'ram_quota': 100}

['/Users/ronnie/Downloads/couchbase-server-community_x86_64_2.0.0-1939-rel/Couchbase Server.app/Contents/Resources/couchbase-core/bin/../samples/gamesim-sample.zip']
[2012-11-06 15:59:25,585] - [rest_client] [140735169014112] - ERROR - http://127.0.0.1:8091/nodes/self error 401 reason: unknown
[2012-11-06 15:59:25,587] - [rest_client] [140735169014112] - ERROR - http://127.0.0.1:8091/pools/default/buckets/ error 401 reason: unknown
[2012-11-06 15:59:25,589] - [rest_client] [140735169014112] - ERROR - http://127.0.0.1:8091/nodes/self error 401 reason: unknown
Traceback (most recent call last):
File "./cbdocloader", line 237, in <module>
main()
File "./cbdocloader", line 226, in main
docloader.init_bucket()
File "./cbdocloader", line 121, in init_bucket
authType='sasl')
File "/Users/ronnie/Downloads/couchbase-server-community_x86_64_2.0.0-1939-rel/Couchbase Server.app/Contents/Resources/couchbase-core/lib/python/couchbase/rest_client.py", line 799, in create_bucket
'proxyPort': self.get_nodes_self().moxi,
File "/Users/ronnie/Downloads/couchbase-server-community_x86_64_2.0.0-1939-rel/Couchbase Server.app/Contents/Resources/couchbase-core/lib/python/couchbase/rest_client.py", line 591, in get_nodes_self
json_parsed = json.loads(content)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/_init_.py", line 326, in loads
return _default_decoder.decode(s)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 360, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 378, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded