I created an AjaxLoadingPanel to display a custom loading image. My problem is that the default one also pops up. how do I disable the default image? The default image in this picture is the Red loading image. I am trying to keep the blue one.
When you use template image for your loading panel, you need to set the Skin property of the RadAjaxLoadingPanel to "" to disable its built-in loading indicator. See the configuration on this demo for details.