ie problem with Viewport

[citymonkeymao]

Hi
When I use IE to open a page that contains a Viewport ,( like this one :http://docs.sencha.com/ext-js/4-0/#!...ed-viewer.html )it always have a warning like this :
消息: 'id' 为空或不是对象
行: 15
字符: 278139
代码: 0
URI: http://docs.sencha.com/ext-js/4-0/ex...ild/ext-all.js

it said that
Message :'id'is null or not an object
row:15
charactor:278139
code:0
URI: http://docs.sencha.com/ext-js/4-0/ex...ild/ext-all.js

this error dose not influence this page though , it causes a big problem on my page . In all my page which have an error like this , all ext components could not be seen ! But when I use firefox or chrome to view the same page , there were no problem at all!
Any one know why ?

[mitchellsimoens]

You are referring to a line and character to a minified file so it's pretty hard to know what class or what code that is referring to.