I will start off by saying that I am very new to module development, so I appreciate your patience.

I added a ScriptManager to my .ascx module by dragging a ScriptManager control to the page.  I also made sure that the "AjaxControlToolkit.dll" is in the "bin" folder of my site.  However, I get this error message on the module when it runs:

"System.InvalidOperationException: Only one instance of a ScriptManager can be added to the page."

When I remove (i.e. delete) the ScriptManager from the page, this error goes away.  I believe I followed the FAQ pointers I found here, but I still can't get rid of this error.  The top of my page looks like this: 

Control

language="vb" Inherits="YourCompany.Modules.DataTester.ViewDataTester" CodeFile="ViewDataTester.ascx.vb" AutoEventWireup="false" Explicit="True"

Register

Therefore, I don't think I am registering it twice.  I would greatly appreciate any suggestions/pointers.  Thank you!

That did it.  I know I tried that before, but it didn't work.  I probably had something else wrong at the time.

Thank you for your help!