http://blogs.msdn.com/b/astebner/archive/2009/08/30/9889189.aspxNote - my colleague Yuichi Ito has provided a Japanese version of the information in this blog post. You can find it at this location on his blog . Every so often, I hear from a user who has encountered an error like the following while trying to openen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/astebner/archive/2009/08/30/9889189.aspx#10230098Wed, 26 Oct 2011 05:16:08 GMT91d46819-8472-40ad-a661-2c78acb4018c:10230098Aaron Stebner<p>Hi Stuck - I&#39;d suggest uninstalling + re-installing the XNA Game Studio 4.0 Refresh, VS 2010 and the .NET Framework 4 to see if that helps in this scenario.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10230098" width="1" height="1">http://blogs.msdn.com/b/astebner/archive/2009/08/30/9889189.aspx#10229924Tue, 25 Oct 2011 17:45:27 GMT91d46819-8472-40ad-a661-2c78acb4018c:10229924Stuck<p>Hi, I have the exact error listed above, and have tried the ResetSkipPkgs fix, but the error remains. &nbsp;Any alternative solutions? &nbsp;I am using VS 2010 Pro, and have installed Game Studio 4.0 and Game Studio 4.0 Refresh.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10229924" width="1" height="1">