Unable to debug some Flex framework libs

Hi,

with IntelliJ 10.5.1 an earlier 10.5.1 EAPs, I am unable to debug some of the Flex framework libs.

Try this:

- Create a new sample Flex application using IntelliJ's new project wizard
- Accept all the defaults and create the HTML wrapper

The generated Flex app looks like:

<?xml version="1.0"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark">
    <fx:Script><![CDATA[
        import mx.controls.Alert;
        ]]></fx:Script>
    <s:Button click="Alert.show('Hello, world')" label="Say Hello"/>
</s:Application>