NDisplay .. cant open exe in multiple pc..

hi , i m experimenting with ndisplay … i would like to have two pc show the the content with ndisplay … the project works in single pc with dual display … but when move to multiple pc . it not working … the nDisplayLauncher.exe nDisplayListener.exe between main node and cluster node did connected and message can be send … but when open the project exe … it show black blank screen and close after fews second … “Make sure that the Windows account you intend to use on the master computer has administrative rights on all computers you intend to use in the nDisplay network.” how to do this ?