Island Demo on Unity Version 3.1.0f4

What do I need to do to the demo files (I'm assuming the script files) to get the Island Demo to properly compile, build, and run on the latest Unity release?

The initial load of the Island Demo indicates that two of the seagull scripts need to have #pragma statements updated. Are there others? What is the process in Unity to get a clean build after I modify these two files to include the #pragma implicit and #pragma downcast statements that the dialog box indicated needed changing for backward compatibility? Thanks for the assist.