I too have purchased this through the Humble Indie Bundle as a stand-alone version. I tried to follow your steps but at 10 I could not find the file Tao.OpenGL.ExtensionLoader.dll.config. All the other files were in the folder except for that one.
Anyway, I downloaded the three files you linked and then put them into the folder, replacing the others. I tried leaving .exe on first, and then that didn't work (like I thought it wouldn't but gave it a try).
After changing them to just .config it seem to be working! I got passed the intro video and into a game. I didn't play very long so I can't say that it will for sure keep going, but it seems to be working fine.
Thanks for your help!