So first timer here I downloaded most recent version of IDE, tried to upload a couple sketches and keep receiving this error message.
Used prebuilt sketches that worked on another system.
ioctl("TIOCMGET"): Inappropriate ioctl for device
Problem uploading to board.
I am using MACbook Pro Yosemite 10.10.5 software. I have verified ports and Arduino uno is being seen by system in USB port.
I am seeing flashing yellow light on pin 13 and green flashing light.
I am using 1SHEELD with board, and all software up to date.