I want to use AjaxControlToolkit on my application pages. I created new project where I added AjaxControlToolkit as safe control. When I deploy this project (package), I can see AjaxControlToolkit in GAC throgh C:\Windows\Assembly.
In other project, where actual application pages are, I added assembly reference for AjaxControlToolkit.dll.
But when I deploy my application pages package and try to access it, I'm getting every time: At the beginig of my application page, I added:
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="act" %>
But I'm getting all the time:
System.IO.FileNotFoundException: Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified.
So I tried by adding adding AjaxControlToolkit as safe control to my application pages package, but that doesn't help.
AjaxControlToolkit is in the GAC, but is invisible.. I'm clueless. Any advice?

