Chassis sample application crashing on 5.1

Hi,

  We were testing vSphere Web client 5.5 SDK chassis sample and found following issues with 5.1 compatibility.

    1. Chassis (5.5 SDK ) sample works fine with 5.5 web client and 6.0 web client server.

     2. While same example deployed on vSphere web client 5.1 sercver, it throws error 1009.

Any help on above context, we are referring 5.5 SDK for our plugin development and same issue is occurred on our UI as well.

Thanks