Vaadin - Having trouble in my HelloWorld app

General
1

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I downloaded netbeans 6.8 and vaadin plugin installed and created an application

Problem : I cant see the

“Hello Vaadin user” message

I dont know what causes the problem my javascript is enable and I didn’t encounter any compilation error
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2

Do you have any more information? It would help to know if there was any error in your server log, how you deployed the app, etc.

Cheers,
Bobby