Cannot install silverlight 4 tools on visual studio 2010 sp1

Question

I\'ve installed Visual Studio 2010 (fresh install), then applied the SP1. Now I\'ve tried to install the silverlight 4 tools, but i\'m getting a strange error message :

Answer 1

I got tired of many threads discussing that and no real solution, at least o pass through the error complaining the VS2010 version/language.

I downloaded the Silverlight4_tools.exe, and started from command line passing the option /X

SilverLight4_Tools.EXE /X

It will ask me a place to extract the files. I set a dir, and from there I run:

silverlight_sdk.msi
RiaServices.msi

After that I could able to remove the old

using System.Web.Ria;
using System.Web.Ria.ApplicationServices;

and replace them with

using System.ServiceModel.DomainServices.Hosting;
using System.ServiceModel.DomainServices.Server.ApplicationServices;