Yep got it. 
installed it.as told in https://docs.google.com/viewer?a=v&q=cache:wGOxZcVHj58J:invensense.com/mems/gyro/documents/AN-MPU-9150IMF%2520InvenSense%2520MotionFit%2520SDK%2520Quick%2520Start%2520Guide.pdf+&hl=en&gl=in&pid=bl&srcid=ADGEESherjc2YJZQFLGmgss8FyOOLPoaW54oy0MKNtOgtBg9Hv0uEqDKW6dwtYOnUBWwMtd3Q93DTOCnTMWioGhLtTr3bdSKj0j1IksdsAqIcoQhmNT4ozaLJLiFwZdX6Li5bgDa6Dnd&sig=AHIEtbR9iVy9UWZJyH1_BBo4sL_BmzkpTw , page 8 Created a shortcut and added COM4 to the target, but it still says "unable to open port", when clicked. The arduino is connected to COM4, checked via serial monitor, working perfectly. Any suggestions?