For those who have experienced any problems getting eScrum (Now Available: Microsoft eScrum Version 1.0) installed and working due to ASP.NET AJAX Control Toolkit version conflicts:
Since you can't download previous versions of the ASP.NET AJAX Control Toolkit, and eScrum is compiled with a specific version, you may need to update the web.config file to allow automatic usage of a newer version of the ASP.NET AJAX Control Toolkit. eScrum has not been tested with newer versions, but may work well.
Add the following XML to the eScrum web.conifg file after the </configSections> close tag. Afterward, update the newVersion attribute to the version of the ASP.NET AJAX Control Toolkit that you are using.
<bindingRedirect oldVersion="1.0.10301.0" newVersion="1.0.xxxxx.0"/>
Let me know if that helps/hinders.