Ext.loader not enabled Missing required?

Question

I have some problems with Extjs4 librairie. I want to use treeEditor component.

Firebug error :

Error : uncaught exception: Ext.Loader is

Answer 1

The error is due to not enabling the Loader. You can enable the Ext.Loader by:

Ext.Loader.setConfig({enabled:true});

You need to call this at the start of onReady method.