Problem with VS2005, Ajax, and obout tool

I get this parsing error when I launch my program in the VS2005.NET environment.  The Ajax object is in my references as is the obout HTML Editor.  Please help.
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Could not load file or assembly 'Obout.Ajax.UI, Version=3.5.0.0' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Source Error:


Line 3:      Namespace="System.Web.UI" TagPrefix="asp" %>
Line 4:  
Line 5:  <%@ Register Assembly="Obout.Ajax.UI, Version=3.5.0.0" Namespace="Obout.Ajax.UI.HTMLEditor" TagPrefix="obout" %>
Line 6:  
Line 7:  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 

Source File: /CoverPageEditor.aspx    Line: 5

Assembly Load Trace: The following information can be helpful to determine why the assembly 'Obout.Ajax.UI, Version=3.5.0.0' could not be loaded.


=== Pre-bind state information ===
LOG: User = NTBIND\Rich.Faulkner
LOG: DisplayName = Obout.Ajax.UI, Version=3.5.0.0
 (Partial)
LOG: Appbase = file:///C:/PhoneGuide/PhoneGuide/
LOG: Initial PrivatePath = C:\PhoneGuide\PhoneGuide\bin
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\PhoneGuide\PhoneGuide\web.config
LOG: Using machine configuration file from c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///c:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/4e3ee9b0/85490cf/Obout.Ajax.UI.DLL.
LOG: Attempting download of new URL file:///c:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/4e3ee9b0/85490cf/Obout.Ajax.UI/Obout.Ajax.UI.DLL.
LOG: Attempting download of new URL file:///C:/PhoneGuide/PhoneGuide/bin/Obout.Ajax.UI.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Major Version
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.
SMAHelpDeskIT ManagerAsked:
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Bob LearnedCommented:
I believe that this is a problem where the assembly loader is expecting one version, but found another.

There are a few reasons for this error.  Is this happening on the server, the development machine, or both?
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SMAHelpDeskIT ManagerAuthor Commented:
Actually, that was the answer!  When I right clicked on the referenced object properties, I noticed the version number was different than what the author put in the code.  When I changed the version number, I was able to move along to the next error:  Having to add another reference to another AJAX object.  After that, the code compiled and the web page loaded.  Thanks.
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