I had Defraggler running on my laptop, displayed on an external monitor at 1280x1024. While it was still running, I switched the display to the laptop only, to undock it, reducing the resolution to 1024x768. Previously I could see all three regions, the drivelist, the map, and the file list. After the resolution change, the map extended below the bottom of the parent window. The only way I could get the file list region back was to switch back to the external monitor, resize the children and then parent, then go back to the smaller display.