I run ComponentDataView example , safari prompt :

Attempting to extend from a class which has not been loaded on the page.
testComponent.js:53TypeError: Result of expression 'Ext.Viewport' [[object Object]] is not a constructor.

Dir structure:
testComponent.html
testComponent.js
resources/Ext.ux.ComponentDataView.js
resources/Ext.ux.ComponentListView.js

why? please help me, thans a lot!testComponentView.zipAttachment 23621