I am adding a tree of RadTreeNodes directly to the control and when node is click it attempts to navigate.
new RadTreeNode(item.Name, item.Path)
ImageUrl = GetNodeImage(item.TypeName),
ToolTip = item.Name,
PostBack = false
I attempted setting PostBack to false, and in the past setting NavigateUrl to "#" based on another thread. These have no yielding any help to prevent the message (that I know at least shows in Chrome).