[dbquery] Autocomplete doesn't work for a new dbquery setup

After setting up the up with

[rdbms]
[[databases]]
[[[mydb]]]
engine=mysql
host=192.168.202.1
port=8889
user=root
password=root

I can see a list of the databases on the UI but the autocomplete generates an HTTP 500.

Stacktrace:

192.168.202.1 - - [27/Nov/2013 07:21:50] "GET /rdbms/api/servers/mydb/databases/hue/tables HTTP/1.1" 500 -
Traceback (most recent call last):
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/Django-1.4.5-py2.7.egg/django/contrib/staticfiles/handlers.py", line 67, in _call_
return self.application(environ, start_response)
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/Django-1.4.5-py2.7.egg/django/core/handlers/wsgi.py", line 241, in _call_
response = self.get_response(request)
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/Django-1.4.5-py2.7.egg/django/core/handlers/base.py", line 179, in get_response
response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/Django-1.4.5-py2.7.egg/django/core/handlers/base.py", line 228, in handle_uncaught_exception
return callback(request, **param_dict)
File "/home/hue/Development/hue/desktop/core/src/desktop/views.py", line 399, in serve_500_error
return django.views.debug.technical_500_response(request, *exc_info)
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/Django-1.4.5-py2.7.egg/django/core/handlers/base.py", line 111, in get_response
response = callback(request, *callback_args, **callback_kwargs)
File "/home/hue/Development/hue/apps/rdbms/src/rdbms/api.py", line 82, in tables
'tables': db.get_tables(database)
File "/home/hue/Development/hue/apps/rdbms/src/rdbms/server/dbms.py", line 87, in get_tables
return self.client.get_tables(database)
File "/home/hue/Development/hue/apps/rdbms/src/rdbms/server/mysql_lib.py", line 102, in get_tables
cursor.execute("SHOW TABLES")
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/MySQL_python-1.2.3c1-py2.7-linux-x86_64.egg/MySQLdb/cursors.py", line 173, in execute
self.errorhandler(self, exc, value)
File "/home/hue/Development/hue/build/env/lib/python2.7/site-packages/MySQL_python-1.2.3c1-py2.7-linux-x86_64.egg/MySQLdb/connections.py", line 36, in defaulterrorhandler
raise errorclass, errorvalue
OperationalError: (1046, 'No database selected')