after i update the dnn 3.2 form .net 1.1 to 2.0, all the nodes of treeview disappeared, only show treeview title...

i check the source from browser find that the treeview part is very werid

                   <div>
                        <table id="dnn_dnnTREEVIEW_tblMain" border="0" cellpadding="5" cellspacing="0" width="100%">
                            <tr>
                                <td id="dnn_dnnTREEVIEW_cellHeader" valign="top">
                                </td>
                            </tr>
                            <tr>
                                <td id="dnn_dnnTREEVIEW_cellBody" valign="top" class="TreeViewBody">
                                    <span>
                                        <div width="100%" name="dnn$dnnTREEVIEW$ctldnnTREEVIEW" id="dnn$dnnTREEVIEW$ctldnnTREEVIEW"  postback="__doPostBack('dnn$dnnTREEVIEW$ctldnnTREEVIEW','[NODEID]Click')" callback="dnn.xmlhttp.doCallBack('ctldnnTREEVIEW dnn_dnnTREEVIEW_ctldnnTREEVIEW','[NODEXML]',this.callBackSuccess,oTNode,this.callBackFail,this.callBackStatus);">
                                        </div>
                                    </span>
                                </td>
                            </tr>
                        </table>
                    </div>

and i found the script

<script>dnn.controls.initTree(dnn.dom.getById('dnn_dnnTREEVIEW_ctldnnTREEVIEW'));</script>

so i think it must be something wrong with "id = dnn$dnnTREEVIEW$ctldnnTREEVIEW". i check other dnn site, treeview menu should like  "id = dnn_dnnTREEVIEW_ctldnnTREEVIEW".

is this issue caused by asp.net 2.0 or dnn setting? can i config the separator? what can i do, please help. Thanks