This morning I moved to the trash bin an icon on the desktop which I had been using for starting Applescript, because I realised there was an icon for it on the Dock. When I used the Dock icon a window listing all the application opened with the Utilities highlighted and a list of all the utilities showing. When I clicked on the Applescript Editor app I got the following message "The document Applescript Editor.app cannot be opened" I then restored the trashed icon but got the same result. I then restored the app from yesterday's Time Machine but still no good. Any suggestions please?