A couple of days ago I was attempting to add an application to the unity launcher from the unity dash and instead of adding the app it created an "empty icon"(blank space) in the launcher there is no way to remove it right clicking produces nothing, hovering over the "icon" does not produce a tool tip, and clicking it does not open an application. The only thing I can do with it is move it around in the stack of apps in the launcher.
Anyone know how to fix this?