This is part 11 of the set. Make sure you have all the previous parts in the same folder before trying to extract!Enjoy! Option 2: The "Help/Request" Post
Since this is part .011 , you will definitely need parts .001 through .010 in the same directory for 7-Zip or WinRAR to join them back together into the original file.
Use this if you are looking for the other parts or having trouble opening it.