flexunit running swf from ant in browser error

I am folloing this post: http://forums.adobe.com/thread/633277?decorator=print&displayFullThread=true

and have the same need.  I would like to have ant pull up a browser and run the unit tests.

I am running

-flex 3.5

-flexunit: 4.1.0-RC1.27

<target name="run-flex-unit">

  <flexunit

      player="flash"

      workingDir=${dist.dir}

      toDir="${dist.dir}/reports"

      haltonfailure="false"

      verbose="true"

      localTrusted="true"

      swf="https://localhost:port/path/FlexUnitApplication.swf"

      command="C:\Program Files\Mozilla Firefox\firefox.exe">

   </flexunit>

</target>

When I run flexunit in ant during the "Validating task attributes..." phase it I get the following error:

"The provided 'swf' property value could not be found.

Based on the write up here: http://docs.flexunit.org/index.php?title=Ant_Task#Setup_your_environment  I think I have things set up correctly, but flexunit still doesn't seem to like the swf url vs a file location.  This thread seemed to suggest it was fixed in flexunit 4.1?

http://forums.adobe.com/thread/633277?decorator=print&displayFullThread=true

Any insight on this?