I was not able to reproduce this issue. I used both 0609 and 0625 versions of our controls and I was able to see all contents:
Please find attached my sample project for further reference. Additionally, the version of Silverlight I am using is 4.0.50401.0
On a side note, I'd like to inform you that we've just released an online tool that allows you to reduce the size of your Silverilght applications. For more information, please visit http://blogs.telerik.com/blogs/posts/10-06-10/telerik_assembly_minifier.aspx
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