Silverlight 4: Resolving Microsoft.Silverlight.CSharp.targets was not found?

Question

I\'ve been upgrading some Silverlight 3 apps to Silverlight 4 in Visual Studio 2010. My Silverlight 3 apps open fine in Visual Studio, but SL4 apps don\'t, with the followin

Answer 1

Afer many tries, what worked for me was: 1. go to add or remove programms 2. remove all silverlight versions installed (4, 5 or even if version is not specified remove it too!) 3. install Silverlight 4 SDK 4. install Silverlight 5 for developers Finally opened the project in VS 2010 SP1