Crash when opening windows in extension...

Question

Hello everybody.
I have encountered a strange issue when trying to open a window from within my extension on OSX: It seems that whenever i try to open a "spark" window from Photoshop CS6, it instantly crashes. The same extension works flawlessly in InDesign.
I have tested it on OSX v. 10.7.5 and 10.8.2 - I haven't tested on Windows, so I don't know if it's a Mac only issue.
I have tried to compile a minimal test case to illustrate the problem - using Extension Builder (2.0.0.62-32314) I created a new project targeting Photoshop and InDesign CS6. I have pasted the contents of the extension and a simple window below.
Now - when i execute this in InDesign,  the window opens and displays fine when I click the "Open window"-button - but executing it in Photoshop causes a crash. If don't set the window type, I can debug and see a different kind of error (Error #3200: Cannot perform operation on closed window) and still no window is shown. And again: only in Photoshop...
So: Have I run into a bug introduced in the latest versions of PS/Extension Builder? I'm pretty sure this used to work in earlier versions (with mx:Window rather than s:Window)? Or is there any other way to open these kinds of native windows, that Photoshop might be happier about?
Thanks.
-- Gerth Isaksen
The main extension file:
<csxs:CSExtension xmlns:fx="http://ns.adobe.com/mxml/2009"
                  xmlns:s="library://ns.adobe.com/flex/spark"
                  xmlns:csxs="com.adobe.csxs.core.*">
    <fx:Script>
        <![CDATA[
            import com.adobe.csxs.types.CSXSWindowType;
            protected function onClick(event:MouseEvent):void{
                var w:TestWindow = new TestWindow();
                w.type = CSXSWindowType.MODAL_DIALOG;
                w.open();
        ]]>
    </fx:Script>
    <s:VGroup height="100%" width="100%" verticalAlign="middle" horizontalAlign="center">
        <s:Button label="Open window" click="onClick(event)" />
    </s:VGroup>           
</csxs:CSExtension>
And a rather simple window, TestWindow.mxml, I want to open:
<s:Window xmlns:fx="http://ns.adobe.com/mxml/2009"
          xmlns:s="library://ns.adobe.com/flex/spark">
    <fx:Script>
        <![CDATA[
            import mx.events.FlexEvent;
            protected function button1_clickHandler(event:MouseEvent):void{
                close();
        ]]>
    </fx:Script>
    <s:VGroup width="100%" height="100%" horizontalAlign="center">
        <s:Label text="Hello" width="100%" height="100%"/>
        <s:Button label="Close me!" click="button1_clickHandler(event)"/>
    </s:VGroup>
</s:Window>

Answer 1

Same problem for me.
This happens only on Mac from version 13.0.4 Photoshop.
It doesn't works with mx:Windows and s:Windows.
I tried with Extension builder version 1.5.0 and 2.0.0.4 but the problem persists.
Thanks.