(1): Please use 7Zip/WinRAR/Universal Extractor to EXTRACT FILES
(2): run the setup
(3): Use the given key to activate
(4): Enjoy and Support Developers, Buy It, They Deserved It!
http://www.angrynod.com/board25/pdf-eraser-pro-1-0-3-29-mb/45879/msg83552#msg83552