I don't have Windows 8 so I can't build for that platform, and I can't figure out a solution. All I know is that Win8's NET is different from every other platform, and Method property is missing. What is in this place? I don't know, and only someone with Win8 can figure it out, which I imagine would take less than 2 minutes. If you figure it out and submit the code that works for you on both Win8 and WP8, I'll integrate your changes into the main repository.