This doesn’t happen in WP8 for me. I assumed that NuGet will always have the latest and greatest version but it seems not, because after reading this thread, I downloaded the Github developer branch as a zip and built the android solution (release mode Any CPU) and referenced those dll instead and the problem is solved. I preferred using NuGet in WP8 since it resolved the ambiguous reference problem which I wasnt able to resolve myself, but on Android it seems better to avoid NuGet for now.