Problem installing Ajax Control Toolkit

I have installed MS Ajax Control Toolkit in Visual Studio 2010.

I can see all the Web Controls under ToolBox in TAB Ajax Control Toolkit.

BUT in the moment of dragging (using) a control, example HTML Editor onto a page, nothing happen, no error, no markup added to code.... and I cannot use it!

So what I am doing wrong?

I installed in a directory called

C:\VisualStudio-Tools\AjaxControlToolki开发者_Go百科t.Binary.NET4

Any ideas? Thanks for your help!

It may be the framework version you are developing in. I had a similar problem where I was working in .NET 3.5 but had downloaded and added AJAX toolkit 4 to my toolbox. I could see the controls but they were greyed out and unusable.

I downloaded and installed AJAX toolkit 3.5 (download here) and it has solved my problem. The controls work beautifully!