LocalConection between a AIR application and Flash Player application

I'm trying to connect a AS2(swf on Flash player using Flash CS4) and AS3(swf on AIR using Flash Builder 4), but I开发者_如何学编程 get an error when I send a command from the AIR app:

[StatusEvent type="status" bubbles=false cancelable=false eventPhase=2 code=null level="error"]

How can I debug this?

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Recently I tried LocalConnection between as3 and as2 too with little luck. Then I found SWFBridge classes by Grant Skinner, and they worked for me.