In this version of PreloadJS, class definitions reside in a "createjs" namespace by default.
For example, instead of instantiating a preloader like this:
var foo = new PreloadJS();
You will need to reach into the createjs namespace:
var bar = new createjs.LoadQueue();
This functionality is configurable though. You can easily shortcut the namespace or get rid of it completely.
To shortcut the namespace, just point a different variable at createjs it is loaded:
To remove the namespace, just point the createjs variable at the window before loading the libraries:
This will also make CreateJS libraries compatible with old content that did not use a namespace, such as the output from the Flash Pro Toolkit for CreateJS v1.0.