PaulMcMillan:
I'm using the ADK2012 device (with the google-provided IDE), which is very similar to an Arduino Due. When I include the pre-release 2.2 version linked above into a project and compile, I get errors like this:
Did you try compiling on Arduino 1.5.1?
Maybe you can copy whatever's ADK2012 is missing from Arduino 1.5.1?
Of course, without fixing delayMicroseconds(), it's unlikely to work reliably.