how to fix ros:Message error?

edit

I try to run Minority Report Interface in MIT Kinect Demos, and when I rosmake kgui, I got this error:

/kgui/src/RosGlobals.h:293:21: error: ‘Message’ in namespace ‘ros’ does not name a type

and I checked RosGlobals.h, it says(start from Row 293):

 void Publish(const ros::Message&_msg){
      if(connected)
                    gf->publish(topic,(void*)&_msg);
    }

I did a little search and find this might be the difference between diamondback and electric, does anybody know how to solve this?