Error with MS IE WebControls

Originally posted by : Roy (roy2001@xs4all.nl)I have downloaded the Microsoft IE WebControls for use with my ASP.NET application but can't seem to get it to work. My installation history is as follows:1) Windows 2000;2) Service Pack 2;3) IIS Security Rollup;4) Latest release of the .NET Framework;5) Latest release of ASP.NET Premium;and6) Microsoft Internet Explorer WebControls.I then tried to set up a simple page using the TreeView control: When I call up this page, I keep getting the following error message:Could not load type Microsoft.Web.UI.WebControls.BasePostBackControl from assembly Microsoft.Web.UI.WebControls, Version=1.0.2.116, Culture=neutral, PublicKeyToken=31bf3856ad364e35.Does anyone have a clue where this error could originate from? All help will be greatly appreciated.Roy.