Enabling DVR in FMS4.5

I have a livevent for which I want to enable DVR.  The event name is liveevent, but when I stream live event it does not show rewind button on player though event plays fine. I am using HDS and this is the URL provided to player http://servername/hds-live/livepkgr/_definst_/liveevent/livestream.f4m

What  might be the problem?

My manifest files look like below

Manifest.xml

==========

<manifest xmlns="http://ns.adobe.com/f4m/2.0">

  <baseURL>http://servername/hds-live/livepkgr/_definst_/liveevent/</baseURL>

<dvrInfo  windowDuration="-1"/>

  <media href="livestream.f4m" bitrate="650"/>

</manifest>

Events.xml

===========

<Event>

    <EventID>liveevent</EventID>

    <Recording>

        <FragmentDuration>4000</FragmentDuration>

        <SegmentDuration>10000</SegmentDuration>

</Recording>

</Event>

Application.xml

===========

<Application>

     <HDS>

        <Recording>

            <FragmentDuration>4000</FragmentDuration>

            <SegmentDuration>16000</SegmentDuration>

            <DiskManagementDuration>4.5</DiskManagementDuration>

        </Recording>

    </HDS>

    <StreamManager>

        <Live>

            <!-- When enabled, the server will assume that incoming live streams have -->

            <!-- timestamps that are based on an absolute clock, such as a SMPTE time -->

            <!-- signal contained within the encoder's input source.                  -->

            <!-- Default is false.                                                    -->

            <AssumeAbsoluteTime>true</AssumeAbsoluteTime>

            <!-- Allow take over so that encoders that go down (for some reason) and  -->

            <!-- and come back up can immediately republish.                          -->

            <PublishTimeout>0</PublishTimeout>

            <!-- When enabled along with AssumeAbsoluteTime, the server will          -->

            <!-- assume that incoming live streams will always maintain the           -->

            <!-- timestamps based on an absolute clock across server and stream       -->

            <!-- restarts.                                                            -->

            <!-- Default is true.                                                     -->

            <AdjustForRecordingRollover>false</AdjustForRecordingRollover>

        </Live>

    </StreamManager>

</Application>