Hello,
In the Ribbon, the tool-tip for the CrossReference button says:

Add a caption for image or other document element

the same as the Caption button.
Patrick

Hello Patrick,

Thank you for contacting us with this issue!

We fixed the problem immediately and it will be included in our next LIB, as well as in Q1 2013 expected in about a month. I also updated your Telerik points in appreciation of your involvement.

Please, do not hesitate to get back to us if you observe other problems.

Greetings,
Petya
the Telerik team