Cannot Build PX4 firmware

Hey guys I am trying to do my first build of the px4 firmware for the pixhawk
I am following the guide here for windows: http://dev.px4.io/starting-building.html
No matter what I try I cannot get the firmware to build despite following all of the instructions to the letter. The build gets to 100% and then hangs on Linking CXX executable firmware_nuttx for a bit before failing
here is the full error:
http://postimg.org/image/530yqig5t/

We are not getting contributions from Windows developers and have no industry partners using it. Hence we’re unable to support it, as stated here: http://dev.px4.io/starting-installing-windows.html