The article you sent helps a bit but doesn't solve my challenge If I want to add a new Mode, I get the following error:
A required control was not found in the template for "~/CustomControls/Libraries/Admin/ImageGalleryControlDesigner.ascx". The control must be assignable form type "Telerik.Cms.Engine.WebControls.Design.PresentationModeSettings" and must have ID "ModeSettings6"
If my only option is to Change MasterTemplateName to MasterTemplatePath and point to an external template, how can I update the small graphic icon in the ControlDesigner so that it represents what my custom presentation mode is going to look like? Is this possible?
Also, not a show stopper but it's not a nice thing for the client (people, not software) is that in my UserControlTemplate I use Bind/Eval in a couple places. When in admin mode I get the message:
"DataBinding Methods such as Eval(), XPath() and Bind() can only be used in controls contained in a page." Is there a way I can surpress this error? Ideally a preview of my template would be ideal but at the very least how would I go about hiding this and just having a "Preview not available in Edit Mode" message displayed?
Many thanks in advance.