Upgrading a Web Project from Silverlight 2 to Silverlight 3

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When upgrading a project from Silverlight 2 to Silverlight 3 Beta, the asp:Silverlight and object tags in the solution's website are not modified.  The minRuntimeVersion attribute of the object tag and the MinimumVerison attribute of asp:Silverlight control must be upated to 3.0.40307.0

<param name="minRuntimeVersion" value="3.0.40307.0" ...

<asp:Silverlight MinimumVersion="3.0.40307.0"  ...

In addition, if you use an object tag, make sure to update the link to install the newest runtime to: https://go.microsoft.com/fwlink/?LinkID=141205