Cannot upload Blink example to arduino intel galileo

i have tried to upload Blink example to arduino intel galileo many time but i got some error about port
I'm using macbook air 2013 if anyone know how to solve this problem let me know

Thank you in advanced for your help

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I have this exact problem. I am using windows 8. I also noticed I am unable to select the COM port. It is just greyed out. Did you find a solution to this problem?

Figured it out. I didn't have the drivers installed. Procedure can be found here https://communities.intel.com/docs/DOC-22796 on pages 7&8. After the drivers are installed check to see that the firmware is up to date by going to the Help tab and then Firmware Update.