I downloaded and installed Vindigo 2.0 for Mac OS X and I can report that the installation was problem-free.
A sync with my Palm 505 uploaded the Vindigo application and a file of my first city: Chicago, complete with a list of restaurants, events, and movies. The greatest advance here are the maps. They are spectacular! The list of available cities has also grown significantly.
I recommend Vindigo 2.0 to all Palm and OS X users.
