Ext fail when IE uses conditional comments

[Just-Boris]

If I turn on conditional comments, default ext application throw syntax error

SCRIPT1004: Expected ';' 
Easing.js?_dc=1350541991462, line 1
SCRIPT5022: The following classes are not declared even if their files have been loaded: 'Ext.fx.Easing'. Please check the source code of their corresponding files for possible typos: 'ext/src/fx/Easing.js ext-dev.js, line 9978 

/*@cc_on!@*/
Ext.application({    
    controllers: ["Main"],
    views: ["Main"],
    name: 'app',
    autoCreateViewport: true
}); 

It happen because first line in Easing.js look like conditional directive and IE wrong interpret it

//@define Ext.fx.Easing <--- syntax error here
/** 
 * @class Ext.fx.Easing
....
 */ 

[mitchellsimoens]

Thanks for the report