"NativeActivity" on a device that doesn't support it?

I am building an Android application using Unity 4.1.5 and Windows 7. The app crashes as soon as it is launched. I looked up the documentation [here][1] and it says "ensure that you are not using NativeActivity on a device that doesn't support it." [The page][2] that the word "NativeActivity" links to has literally no information about what "NativeActivity" is, does, or how to make sure you're not using it. Can someone please tell me what I'm doing wrong here? [1]: http://docs.unity3d.com/Documentation/Manual/TroubleShooting.html#AndroidTroubleShooting [2]: http://docs.unity3d.com/Documentation/Manual/class-PlayerSettings.html#Android