CS4 CSXSLibrary: CSXSInterface.instance always null

i wanted start scripting custom panels photoshop cs4 everytime compile flexsdk (just pure as3, no flex code) errors saying:

[fault] exception, information=typeerror: error #1009: cannot access property or method of null object reference.

 

so means:

csxsinterface.instance turns out null. , makes impossible me communicate photoshop or jsx functions.

 

i using csxslibrary-2.0-sdk-3.4.swc in combination photoshop cs4. library perhaps not suited cs4? need older library , if can download it. of libraries seem rather difficult find on internet.

 

 

my as3 source (just 1 class) looks this:

 

package  {      import com.adobe.csxs.types.*;      import com.adobe.csxs.events.*;      import com.adobe.csxs.core.csxsinterface;      import flash.display.sprite;      import flash.events.event;            public class main extends sprite       {                      public function main():void            {                if (stage) init();                else addeventlistener(event.added_to_stage, init);           }                      private function init(e:event = null):void {                csxsinterface.instance.addeventlistener(statechangeevent.window_open, creationcomplete);           }           private function creationcomplete(e:event):void {                           }      } }  

 

 

i display swf panel in photoshop ignores commands associated csxsinterface.instance because results null within photoshop.

i downloaded latest photoshop panel developer's guide archive comes csxslibrary-2.0-sdk-3.3 , csxslibrary-2.0-sdk-3.4.swc null result booth libraries. though flashdevelop shows me swc library has been importet, mean can access csxsinterface just not singleton instance.

 

any insight or input appriciated

 

edit:

some irritating bb shortcut triggered pre release of post.

the best place ask these questions in cs sdk forum:

http://forums.adobe.com/community/creativesuites/cs_sdk

 

harbs

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