Issues creating a tinyMCE plugin that creates a custom link
Change this: ed.execCommand(‘mceInsertContent’, 0, return_text); To this: ed.execCommand(‘mceInsertContent’, false, return_text); The second argument of the tinyMCE.execCommand() function is a boolean value that states if a UI needs to be presented to the user. Reference: http://www.tinymce.com/wiki.php/API3:method.tinymce.execCommand