calling external files in cf10

I just starting using CF 10, and all my external js calls get a 404 error.

This was my latest test: 2 files 1  cfm 1 js in the webroot

    wwwroot

       hello.cfm

       hello.js

hello.cfm contains the following

    <script>alert('hello from calling page');</script>

    <script src='hello.js' language='JavaScript'></script>

hello.js contains the following

    alert('hello from external js file');

the inline script fires fine, the external js file returns 404 - not found.

I have run this on 3 separate systems, stand a lone lap top,  Virtual Machine on the net work and my dev machine

used firefox, IE, Operal and Chrome  and the results were Identical.  So What setting am i missing  in the CF admin or is there a new syntax for calling external files in CF 10

Anyone else run into this?