I have downloaded version 6.6 and integrated our application with that,

The issue I am running into is that the below code use to work fine,

But now the image is not showing, please check -

int pos = Editor1.ToolControls.IndexOf("ImageMap") + 2;  

WebControl ctrl = Editor1.CreateCommandButton("BtnCode", "BC1.gif", "Add custom.");

ctrl.Attributes.Add("onclick", "return insertButtonClick()");