I experience the same problem. Seems that AES configuration window has "moved to back" which is why clicking on the x does not work. One has to bring that window to active in order for the clicking on x to work. Oliver, this is distracting ... take off is a very busy period and therefore anything you can do to overcome this glitch would be appreciated. in the meantime the workarounds you suggest will be implemented as a bandaid solution. Many thanks for an otherwise superb product. Regards, Brian