A little constructive Feedback...
The FPE file is looking for Boss0.X but the X file is called Boss.X so error results.
I`m afraid I was not able to put the fellow in my game world though even after changing the X files name... I`m not sure of the exact nature of the problem, but the character was scrunched in on itself in the map editor and was completely not there in the game. (He still had health and I could shoot him, but he just was invisible). It may have been an X10 issue, I`m not sure as I do not have X9 installed on my PC.
Artist Tag : Kasseyus