title: Visual Studio SP1 error: silverlight_sdk.msi is unavailable
body: <p>I'm trying to install the SP1 for Visual Studio 2010. I first installed the beta and it worked fine. Then I used the web platform installer to install the SQL CE Compact 4, which I assume installed the full SP1 after (this installation took over 12 hours, so I canceled it). The web platform installer told me that SP1 and Silverlight 4 was installed.</p>
  
  <p>Visual Studio tells me SP1 was partially installed. So I downloaded the installer from the site and now it gives me this error:</p>
  
  <p><code>Microsoft Silverlight 4 SDK - The feature you are trying to use is on a network resorce that is unavailable. Seeking application package 'silverlight_sdk.msi'</code>.</p>
  
  <p>How can I fix this error?</p>