any new developments.
I am a newbie and have exactly the same problem.
Arduino: 1.6.5 (Windows 8.1), Board: "Arduino Micro"
Build options changed, rebuilding all
Sketch uses 4,790 bytes (16%) of program storage space. Maximum is 28,672 bytes.
Global variables use 151 bytes (5%) of dynamic memory, leaving 2,409 bytes for local variables. Maximum is 2,560 bytes.
avrdude: butterfly_recv(): programmer is not responding