Error calling method on NPObject! in Android 2.2

Question

I'm using addJavascriptInterface within my Android application to allow JavaScript to invoke functions I've created in my native Java application.

This worked well in Android 2.1, however in Android 2.2 I receive the error message "Error calling method on NPObject!"

When I instrument the method call the internals of the native method are getting called, however the exception is being throw in JavaScript.