Button & ClickListener

Hi,

I'm experiencing a problem while implementing a simple button with Vaadin 7.0.0.alpha1

Here's code snippet

final Button button = new Button("hello", new Button.ClickListener() {
      public void buttonClick(Button.ClickEvent event) {
        // do any stuff here
      }
    });

The result of pushing the button in the browser is

in Chrome

Communication problem
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(SyntaxError): Unexpected identifier - Original JSON-text: html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

In FF

Communication problem

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(SyntaxError): missing ) in parenthetical stack: I_(" html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n\n\n\n\n\n\n\n\n\n
\n\n")@http://localhost:8080/:1296 W$([object Object]," html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n\n\n\n\n\n\n\n\n\n
\n\n")@http://localhost:8080/:1801 V_([object Object],[object Object])@http://localhost:8080/:1904 _o([object Object],[object Object])@http://localhost:8080/:1603 zp([object XMLHttpRequest])@http://localhost:8080/:1904 ([object Event])@http://localhost:8080/:1275 Gd((function () {a.yc(b);}),[object XMLHttpRequest],[object Arguments])@http://localhost:8080/:1012 Jd((function () {a.yc(b);}),[object XMLHttpRequest],[object Arguments])@http://localhost:8080/:1714 ([object Event])@http://localhost:8080/:1382 fileName: http://localhost:8080/ lineNumber: 1296 - Original JSON-text: html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Some JS problem I guess?

This looks a lot like http://dev.vaadin.com/ticket/8274. You can test using the nightly build from 21.01.2012 instead of the alpha1 release. It should not contain any major changes compared to the alpha1 release, but some defects have been fixed.

Me also getting this issue:
"NetworkError: 504 Gateway Timeout - http://220.247.223.53:8080/zmssp/UIDL?windowName=1"

How to solve this?