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Error #1088: The markup in the document following the root.. 
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Joined: Tue May 20, 2008 12:33 pm
Posts: 2
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I'm getting an error when loading xml into my flash document.
I've checked the XML-document with 2 oline check sites, the one from w3c and They both tell me the XML is well formed.

FD gives the following output error:

[Fault] exception, information=TypeError: Error #1088: The markup in the document following the root element must be well-formed.
Fault, xmlLoaded() at

I really don't know what is means. I tried a lot and I don't know where to look.
When I create a var with the XML in my application it works... but i want it to be dynamic so i need to load the xml.
The code to load the XML is from the book Essential Actionscript 3.0 from Colin Moock.

I hope you can help me out.

Thanks in advance,

Here's the code I use in FD:
//XML Laden
      private function loadMyXML():void {
         var XML_URL:String = "";
         var myXMLURL:URLRequest = new URLRequest(XML_URL);
         myLoader = new URLLoader();
         myLoader.addEventListener(Event.COMPLETE, xmlLoaded);
      private function xmlLoaded(event:Event):void {
         myXML = new XML(;

Mon Jun 02, 2008 12:42 pm

Joined: Sat Mar 27, 2010 10:41 pm
Posts: 1
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Excuse the reply to a post 2 years old but it might be some use to people encountering this frustrating problem.

For well-formed XML returning
TypeError: Error #1088: The markup in the document following the root element must be well-formed,
often the problem is the BOM.

Actionscript XML does not strip the BOM (Byte Order Mark) from incoming text. The BOM is an invisible character (#65279) created at the beginning of a ASP or php "echo" string, as well as some text editors, to indicate the byte-ordering of multibyte text.

You can confirm if your string has this BOM character like this:
trace( sXMLString.charCodeAt( 0 ) ); //outputs 65279

The quick solution is
sXMLString= sXMLString.replace( String.fromCharCode(65279), "" ) ;
myXML = new XML(sXMLString);

Sat Mar 27, 2010 10:53 pm

Joined: Tue May 20, 2008 12:33 pm
Posts: 2
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Thanks for your reply, I've been waiting for it for two years now, finally I can move on :)
To be serious it's sometimes very frustrating to get errors like that. I created everything in Flash to get rid of the problem.
Luckily it's solved now and everybody can use it in future projects.

Sun Mar 28, 2010 12:14 pm

Joined: Wed Aug 31, 2005 7:27 am
Posts: 12172
Location: London
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Sounds like a corrupted BOM issue to me. I had only this issue once.

Sun Mar 28, 2010 3:24 pm
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