I use this palette all the time and keep the icon displayed (in hidden form) on every session that I open. I started AutoCad this morning and "external reference" icon was not displayed on the screen. I went to the tools tab and selected the external reference palette. A box was displayed that could not be hidden and all screen function were stopped until I closed this box. I went to customize tool palettes and compared it to the properties palette and they looked the same. I want to get my external reference palette function back to the way it was, any idea?