I created xml file for heartrate server using bluetooth developer studio and the plugin nRF8001_Arduino (plugin nordic semiconductor for arduino)
the generated xml file is different than the one found in the nordic sdk example and the result service.h file don't work.
first file here annexed is the working xml file (the one annexed in the nordic sdk examples):
developer.bluetooth.org/.../heart_rate_sensor.xml
the second file is the file generated with bluetooth developer studio + plugin for arduino. this file used with nrfGostudio don't generate a good service.h
developer.bluetooth.org/.../nrf8001.xml
Note: i used last revision of bluetooth developer studio and Last version of nrfgostudio