1. Turn on firebug or developer tool in the browser and go to console;
2. Open up reorderer manual test: http://build.fluidproject.org/infusion/tests/manual-tests/html/versioning.html
3. This error is reported in the console:

"NetworkError: 404 Not Found - http://build.fluidproject.org/infusion/tests/manual-tests/html/todo-list.css"