Update: I moved the variable declaration that requires the Kinect library into the ready method like this:
public override void _Ready()
{
KinectSensor sensor = KinectSensor.GetDefault();
}
Now I am getting this error:
E 0:00:00.612 debug_send_unhandled_exception_error: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Kinect, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.
While this is a lot less cryptic then the previous two, It still doesn't tell me why the library can't be loaded.