To reproduce: Start VSB -> RadButton -> RadButtonElement -> ImagePrimitive - Image -> Browse for image and you will see no change. Workaround: Start RadControlSpy using Ctrl + H, select the button, browse to the ImagePrimitive and set the Image property Resolution: The described behavior is not an issue. The image should be set to Image property of RadButtonElement instead of ImagePrimitive.
Add the ability to style RadCarousel via Visual Style Builder.