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dhtmlXTreeObject: Safari DataStructure XML reffers to not existing parent

Hi,
I am using newtree.loadXML('Data.aspx?Type...') to load the first level of the tree, and newtree.setXMLAutoLoading("Data.aspx?Type=getSubTree") to load the child nodes. It is working in IE; however, I am getting "DataStructure XML reffers to not existing parent" error in Safari. The sample data for the parent is
<?xml version="1.0" encoding="utf-16"?>
<tree id="0" radio="1">
<item text="Rock" id="197606.48292" im0="folderClosed.gif" im1="folderOpen.gif" im2="folderClosed.gif" child="1">
<userdata name="type">production</userdata>
</item>
</tree>

and the sample data for the child is:
<?xml version="1.0" encoding="utf-16"?>
    <tree id="197606.48292" radio="1">
        <item text="E00211" id="e189418" im0="folderClosed.gif" im1="folderOpen.gif" im2="folderClosed.gif" child="1">
            <userdata name="type">e</userdata>
            <item text="Daily" id="mhdr1044505" im0="folderClosed.gif" im1="folderOpen.gif" im2="folderClosed.gif" child="1">
            <item text="Reel Day 5" id="media1044505" im0="film.gif" im1="film.gif" im2="film.gif" child="0">
                <userdata name="type">media</userdata>
                <userdata name="viewed">1</userdata>
                <userdata name="offset">43179.95703125</userdata>
                <userdata name="mediaid">1044505</userdata>
                <userdata name="prodid">197606</userdata>
                <userdata name="epid">189418</userdata>
                <userdata name="atyp">dailyreel</userdata>
                <userdata name="mediafile">rtsp://3.23.187.50/daily/staging/2_1500k.wmv</userdata>
                <userdata name="name">Rock / E00211 / R012 / Day 5</userdata>
            </item>
        </item>
    </tree>

Please help.

There is an error in xml structure, the next tag is not closed
       <item text="Daily" id="mhdr1044505" im0="folderClosed.gif" im1="folderOpen.gif" im2="folderClosed.gif" child="1">
must be 
       <item text="Daily" id="mhdr1044505" im0="folderClosed.gif" im1="folderOpen.gif" im2="folderClosed.gif" child="1" />

I found the problem is inside the aspx code behind file, the Response.ContentType = "application/xml" was missing. After putting the xml header, Safari is working fine.