title: Can't install Silverlight Developer runtime
body: <p>I have installed VS 2010 professional with full installation in Windows 7.</p>
  
  <p>I have installed Silverlight 5.0 separately.</p>
  
  <p>When I create  silverlight application, it asks for installing silverlight Developer runtime.</p>
  
  <blockquote>
    <p>You need to install the latest Silverlight Developer runtime before creating a Silverlight project</p>
  </blockquote>
  
  <p>After downloading the runtime when I tried to install  it prompted that </p>
  
  <blockquote>
    <p>newer version of Silverlight is already installed</p>
  </blockquote>
  
  <p>So I cant install runtime and I cant create siverlight application.</p>
  
  <p>I tried to install Silverlight 5 tools, but it ask to install service pack 1 for visual studio.
   Microsoft Silverlight 3 SDK and Microsoft Silverlight 4 SDK are already installed in the system. Why SDK does not include the developer runtime ?</p>
  
  <p>What are the things do we need to develop a silverlight application ?</p>