You may want to try using Serial1, Serial2, Ect, as this board has several Uarts. I discovered by reasearching other threads that the "normal" ardunio tx/rx pins are controlled under Serial1.
Thanks, I poked around and found that different arduino boards map the Serial, Serial1, Serial2 etc, software syntax to different physical serial ports on the boards. It looks like the Galileo is most similar to the Leonardo in this respect. It would be nice if the arduino site would add the Galileo board to the language reference where these differences are described. On Uno the pin0,1 serial port is accessed with Serial.print while on Galileo and Leonardo it is accessed via Serial1.print. This is kind of a mess.