I just got 16, and a number of my scripts aren't working I'm guessing it's just variable declarations that are more strict, but it would be nice to see a list of any new objects and any other stuff that's changed.
If they were older scripts, you need to change the "Sony.Vegas" declaration at the top to "ScriptPortal.Vegas". Here's an example where the "old" version is commented out and the "new" version is added.