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Cannot load IE WebControl Treeview in webpart

Vaibhav Shah
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While loading a user control with IE WebControl's tree view in it, on a
webpart, i am getting this error.

Error: unable to load ~\UserControls\TreeViewControl.ascx
Details: Parser Error: Could not load type
Microsoft.Web.UI.WebControls.Design.CssCollectionE ditor from assembly
mscorlib, Version=1.0.5000.0, Culture=neutral,

Following is the source code of the user control that i am embedding in web
================================================== ============
<%@ Control Language="vb" AutoEventWireup="false"
Codebehind="TreeViewControl.ascx.vb" Inherits="MyTree.TreeViewControl"
TargetSchema="" %>
<%@ Register TagPrefix="ie" Namespace="Microsoft.Web.UI.WebControls"
Assembly="Microsoft.Web.UI.WebControls" Version="%>
<ie:treeview id="tvMenu" tabIndex="1"
Runat="server" CssClass="treeview"></ie:treeview>

I have installed the IE Web Controls on server where webpart is hosted.

Any ideas what could be wrong? Anything wrong with installation on remote

Thanks and awaiting a response....

- Vaibhav shah

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