I recently bought a new MacBook Pro and am not able to upload sketches to my Arduino Uno. The board works perfectly fine on my older mac running 10.5.8 Leopard, but not on this comp running 10.7.2. Whenever I try to upload a sketch I get the following error:
processing.app.SerialException: Serial port '/dev/cu.usbmodemfd121' already in use. Try quiting any programs that may be using it.
I tried according to other posts to install this FTDI Serial Drivers: http://www.ftdichip.com/Drivers/VCP/MacOSX/UniBin/FTDIUSBSerialDriver_v2_2_14.dmg
However, this did not change anything. There is no cu.usbserial.* port available only this cu.usbmodemfd121, which says its in use despite the lack of other applications running.
I have tried hooking it up to another usb port and it is not connected to a hub. Any help would be greatly appreciated. Thank you.