In an attempt to get up to date with the current state of Arduino, I ordered two Micros and two Leonardos. Unfortunately, I'm having a bit of an issue trying to upload sketches to both. About 4 in 5 uploads fail with the following error:
processing.app.SerialException: Serial port '/dev/tty.usbmodem24111' already in use. Try quitting any programs that may be using it. at processing.app.Serial.touchPort(Serial.java:119) at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:201) at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:67) at processing.app.Sketch.upload(Sketch.java:1671) at processing.app.Sketch.exportApplet(Sketch.java:1627) at processing.app.Sketch.exportApplet(Sketch.java:1599) at processing.app.Editor$DefaultExportHandler.run(Editor.java:2380) at java.lang.Thread.run(Thread.java:680)
My workaround right now is to repeatedly click Upload until it succeeds. Any idea what this is? Uploads to my Duemilanove (FTDI-Interface) with Optiboot work without error. This is on Mac OS 10.7. Happens with the cable directly on my laptop and on the USB hub.