I thought I knew how to customize toolbars. One day I placed the measuring icon on a toolbar, then realized I didn't need to do that since it is already on the evaluate tab. I moved it back to the commands window but next day it was back. Shortly after that a second one appeared. I've tried removing them by alt-drag and dragging them onto the command window. Also I moved them to the evaluate tab and deleted them. After everything I can think of trying they keep coming back, both of them. What could be going on? Thanks.