zk dashboard unavailable during zookeeper restarts

[ezbz]

AttributeError at /
'NoneType' object has no attribute 'group'
Request Method: GET
Request URL: http://zk_dash:8080/
Exception Type: AttributeError
Exception Value:
'NoneType' object has no attribute 'group'
Exception Location: /home/tomcat/zookeeper_dashboard/../zookeeper_dashboard/zkadmin/models.py in init, line 35
Python Executable: /usr/bin/python26
Python Version: 2.6.5
Python Path: ['/home/tomcat/zookeeper_dashboard', '/home/tomcat/zookeeper_dashboard/lib.linux-i686-2.6', '/usr/lib/python26.zip', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/site-packages']
Server time: Sun, 25 Sep 2011 10:07:36 -0500

Environment:

Request Method: GET
Request URL: http://zk_dash.outbrain.com:8080/
Django Version: 1.1
Python Version: 2.6.5
Installed Applications:
['django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'zookeeper_dashboard.zkadmin',
'zookeeper_dashboard.zktree']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware')

Traceback:
File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response

1.             response = callback(request, _callback_args, *_callback_kwargs)
   

   File "/home/tomcat/zookeeper_dashboard/../zookeeper_dashboard/zkadmin/views.py" in index

2.     zkserver = ZKServer(server)
   

   File "/home/tomcat/zookeeper_dashboard/../zookeeper_dashboard/zkadmin/models.py" in init

3.     self.version = m.group(1)
   

Exception Type: AttributeError at /
Exception Value: 'NoneType' object has no attribute 'group'