SWFLoader Working in Air Project but not Web Project - actionscript-3

Question

I have been developing a Web type Flex project in Flash builder. In this project I have been trying to load a swf file using the SWFLoader. I have had trouble getting the debugger working, so I have instead created an identical Air project that I can run and debug with (I keep it up to date with a script). I have successfully loaded the swf file in my Air project with no trouble. But, when I went to test this in my Web project, the SWFLoader does not seem to work, I just get a blank area where my SWFLoader element should display the loaded swf file.
private function get_swf_file_binary_amf(event:ResultEvent):void {
Alert.show("SWF Returned");
var decoder:Base64Decoder=new Base64Decoder();
decoder.decode(event.result);
var swf_bytes:ByteArray=decoder.toByteArray();
var context:LoaderContext=new LoaderContext();
context.allowLoadBytesCodeExecution=true;
context.parameters = {myval: "test_string"};
swf_loaded_file.loaderContext = context;
swf_loaded_file.addEventListener(Event.COMPLETE, loadComplete);
swf_loaded_file.load(swf_bytes);
}
private function loadComplete(completeEvent:Event):void{
trace("load Complete")
}
Above is the code that works in my Adobe Air project. I am receiving the binary data of my swf file and converting it into a ByteArray, not using the URLLoader like so many example suggest. Could this be the cause of my problems when I try to run this in my Web project?
Edit/Update: I have found the particular line where the Web project fails:
context.allowLoadBytesCodeExecution=true;
I am still not sure why my Web project does not like this line, yet my Air project doesn't care.

Answer 1

I have removed the accursed line:
context.allowLoadBytesCodeExecution=true;
This seems to have fixed the problem. I am not even quite sure what this line does, I had just carried it over from a tutorial. Getting rid of it didn't seem to break anything that worked in my Air project, so I think that solved my problem.