How to Upload (OS X 10.9.4)

I'm an experienced Arduino Uno user who is new to the Intel Galileo development board. I've been able to select the /dev/cu.usbmodem##### as my serial port, and I get no errors uploading (upload messages end with "Transfer complete # #").

However, I am unable to print to Serial:

void setup(){ Serial.begin(9600); }

void loop(){ Serial.println(5); }

Gives, on the serial monitor, "** B0100000063f694", but no repeating messages, and certainly no fives.

And I am similarly unable to control the power to an LED. I run the following,

void setup(){

  pinMode(ledPin,OUTPUT);

  digitalWrite(ledPin, LOW)

}

void loop(){}

and the LED stubbornly remains in its strange behavior of  turning on when I plug it into an analog or digital pin. (regardless of what code I send its way). Has anyone gone through this issue? If so, how can I fix it?

Please ask if you need more information