Insert Link/Picture "From SharePoint" grayed out in the ribbon

Question

In the ribbon, I want to insert a picture or a link into a content page, but the "From Sharepoint" button is grayed out and I can only upload an image or insert a link with from an address. My field is rich text.I'm using sharepoint 2010

What is going on? Thx

Answer 1

Usually ribbon button is grayed out if you didn't add CommandUIHandler element for it in your CustomAction XML.

For more details, you can see this MSDN article:

http://msdn.microsoft.com/en-us/library/ff458385.aspx

Also, you can find useful this article (with sample code and screenshot):

http://blogs.msdn.com/b/jfrost/archive/2009/11/06/adding-custom-button-to-the-sharepoint-2010-ribbon.aspx