AJAXControl Toolkit issue in VS 2008

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When I tried opening the AjaxControlToolkit.sln by double clicking on it, it was throwing the following error at me...

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Microsoft Visual Studio
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The application for project 'H:\Downloads\AjaxControlToolkit\SampleWebSite' is not installed.

Make sure the application for the project type () is installed.
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OK   Help  
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To get rid of it, open the SLN file directly from File -> Open -> Project/Solution. Create a backup if you like (when prompted!).

You may also get the following error while trying to compile the Solution...

Parser Error Message: Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

This is because, you probably didn't install the AJAXControl Toolkit. Get it from here.

Another error that you could encounter is...

error : Could not load file or assembly 'vjslib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Done building project "TemplateVSI.csproj" -- FAILED.

Install JS Redist from here and you should be good.

Cheers, Wave
Rahul