error opening an application in silverlight

Question

When I tried to open the application here.

http://amazedsaint.net/nerddinner

It gives me an error saying that:

This application was created for an expired beta release of Silverlight. Please contact the owner of this application and have them upgrade their application using an official release of Silverlight.

So what does this mean?

Answer 1

That's mean developer uses expired library of SilverLight to develop that application. This problem came from SilverLight 4 beta library. You can install this runtime http://www.microsoft.com/downloads/details.aspx?FamilyID=bf5ab940-c011-4bd1-ad98-da671e491009&displaylang=en or wait for them upgrade library.