Arduino software does not recognize USB


I am having difficulty with my software not recognizing the USB port on my computer. I am running OSX 10.6.4. I am using an arduino mega, the old one, MEGA1280. I have installed the latest version of the software, 0021. Please help me. Thanks.



I'm on 10.6.4 as well, but still using Arduino 0018.

Did you install the FTDI drivers? Not sure if this is relevant for 0021... I'm waiting to complete current project before upgrading.


Look in network preferences to see if you have an entry for your device. If so delete it and try again with the driver installation.