i just bought the logitech desktop s530 for mac system and i can not get the software to work on my new mbp. i downloaded the latest software and it says to plug in the receiver and restart the software every time i try to open the software to make adjustment to my mouse/keyboard settings. i can use the mouse and keyboard with out the software but i can not use the special keys on the keyboard like itunes and dashboard or assign the mouse buttons. anyone have any clue why the software don't work?