OpenStack API Create function fails with index out of range

Using the OpenStack API the Create function fails with a "list index out of range" error. This has been tried with multiple ImageID and FlavorIDs (numbers, strings etc)

OS: Ubuntu 10.10
Nova Version: 2011.1~bzr569-0ubuntu0ppa1~maverick3
Modifications: None

Request:

POST /v1.0/servers HTTP/1.1
X-Auth-Token: 9683e742c697f263a0d843e7f8b344c1d27dd549

{
   "server": {
       "name": "mike-test",
       "imageId": "ami-tty",
       "flavorId": "m1.small"
   }
}

Response:

HTTP/1.1 500 Internal Server Error
Content-Type: text/html; charset=UTF-8
Content-Length: 69
Date: Mon, 17 Jan 2011 21:20:17 GMT
Connection: close

{"computeFault": {"message": "list index out of range", "code": 500}}

nova-api.log:

(nova.api.openstack 2011.1-workspace:tarmac-20110115022500-fcgl1yga6csc221i): ERROR [N/A] Caught error: list index out of range
(nova.api.openstack): TRACE: Traceback (most recent call last):
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/nova/api/openstack/__init__.py", line 73, in __call__
(nova.api.openstack): TRACE: return req.get_response(self.application)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/request.py", line 919, in get_response
(nova.api.openstack): TRACE: application, catch_exc_info=False)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/request.py", line 887, in call_application
(nova.api.openstack): TRACE: app_iter = application(self.environ, start_response)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/dec.py", line 159, in __call__
(nova.api.openstack): TRACE: return resp(environ, start_response)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/dec.py", line 159, in __call__
(nova.api.openstack): TRACE: return resp(environ, start_response)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/dec.py", line 159, in __call__
(nova.api.openstack): TRACE: return resp(environ, start_response)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/routes/middleware.py", line 131, in __call__
(nova.api.openstack): TRACE: response = self.app(environ, start_response)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/dec.py", line 159, in __call__
(nova.api.openstack): TRACE: return resp(environ, start_response)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/dec.py", line 147, in __call__
(nova.api.openstack): TRACE: resp = self.call_func(req, *args, **self.kwargs)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/webob/dec.py", line 208, in call_func
(nova.api.openstack): TRACE: return self.func(req, *args, **kwargs)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/nova/wsgi.py", line 265, in __call__
(nova.api.openstack): TRACE: result = method(**arg_dict)
(nova.api.openstack): TRACE: File "/usr/lib/pymodules/python2.6/nova/api/openstack/servers.py", line 146, in create
(nova.api.openstack): TRACE: req.environ['nova.context'])[0]
(nova.api.openstack): TRACE: IndexError: list index out of range
(nova.api.openstack): TRACE:

Additonal info:
Results from images/flavors details

GET /images/detail
{"images": [{"status": "active", "id": 4498728160366123684, "name": "nova/tty-kernel"}, {"status": "active", "id": 9076875775488977738, "name": "nova/tty"}, {"status": "active", "id": 472304719163701353, "name": "nova/tty-ramdisk"}]}

GET /flavors/detail
{"flavors": [{"disk": 40, "ram": 4096, "name": "m1.medium", "id": 3}, {"disk": 0, "ram": 512, "name": "m1.tiny", "id": 1}, {"disk": 80, "ram": 8192, "name": "m1.large", "id": 4}, {"disk": 160, "ram": 16384, "name": "m1.xlarge", "id": 5}, {"disk": 20, "ram": 2048, "name": "m1.small", "id": 2}]}