AbleCommerce Shopping Cart Software

I have another control that I have to use with AbleCommerce, it uses a newer version of the AjaxToolkit, but AbleCommerce will not compile when I replace the AjaxToolkit dll.
The version I'm trying to use is 1.0.11119.0

How can I get AbleCommerce up to the latest version of the AjaxToolkit?

I'm getting an error on this line:

<uc1:AdminHeader...

in the file Admin/Admin.master

Unknown server tag 'uc1:AdminHeader'. C:\Inetpub\demo.eyedoctordirect.com\Admin\Admin.master 55

If I take the line out I get this error:
Could not load file or assembly 'AjaxControlToolkit, Version=1.0.10301.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

I did change the Version in the web.config to 1.0.11119.0, but I got the same error as above, just with version=1.0.11119.0

Hello,

You're going to need to wait until we have a chance to test under the newer version of asp.net and ajax.

Hey Mike,
have you guys had a chance to test the new Ajax Toolkit version. I'm still trying to use the latest version and are getting the same error. I'm working on the final release copy build 9879.

John