Commented Issue: The file 'c:\Users\Stephen\Documents\Repos\Superexpert\AjaxControlToolkit\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs' does not exist. [27275]

The following error occurs when adding any of the controls to my page:

The file 'c:\Users\Stephen\Documents\Repos\Superexpert\AjaxControlToolkit\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs' does not exist.

The error occurs in the 4.0 binary version 4.1.60623.0
Comments: How do I move the javascript to the bottom of the page? It seems to be nothing I have control over.