Hi, I'm trying to use my Arduino UnoR3 for the first time, on a Mac 10.7.5. I've installed a FTDI driver as a friend told me this might be necessary. When I connect the arduino to my laptop, the lights are on. In Tools>Serial Port appears the /dev/tty.usbmodemfa131. I've selected this one, and for …

Problem uploading: user configuration file does not exist

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