Problems with MagicAjax

I added what is below to my web.config file:

<add name="MagicAjax" type="MagicAjax.MagicAjaxModule, MagicAjax"/>
<add name="ScriptModule" type="Microsoft.Web.Services.ScriptModule"/>

And I got:

Could not load file or assembly ‘MagicAjax’ or one of its dependencies.
The system cannot find the file specified. (C:\Inetpub\wwwroot\TheTracker\web.config line 48)

The solution I found that worked was adding the MagicAjax assembly to your /bin folder. And that fixed the problem.