If you are using the new “Gemini Team Site” in SharePoint 2010 (I guess this must be renamed in the Beta-2). You may notice that we can’t add Data Connection Libraries to work with traditional BI sources.

This is just because it is not a site feature enabled by default. You can just go into “Site Settings”=>”Manage Site Features” and re-select the “Office SharePoint Server Enterprise Site Features” option to activate it

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