Open Stack

Hello,
I have installed horizon dash board from git and integrating with nova. When I login to dashboard, I am getting error. Error: please try logging again.
In dashboard log, I see  the following error:
Request returned failure status.

In keystone log, I see 
2012-03-21 15:37:02    DEBUG [routes.middleware] No route matched for POST //tokens
2012-03-21 15:37:02    DEBUG [eventlet.wsgi.server] 16.213.0.39 - - [21/Mar/2012 15:37:02] "POST /v2.0//tokens HTTP/1.1" 404 228 0.000782"routes.middleware
 
Any clue regarding this is appreciated.
Thanks,
jay 
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