Before compiling your movie (Ctrl+Enter), go and configure your publish settings, in the flash tab , select "Acces Network Only" from the Local playback box. This will change the sandbox of your app and will allow you to access the web.
another possible solution is to ensure there is a default browser selected, because if flash calls the default browser applications and the system doesnt have one it wont do anything.
Currently working at
Probooks-Libros