I don't know much about OEM, but this err is a unix issue. It seems that you're not at the console when you exec this command. Here's what you need to do, "xhost +" you probably need to be root for this. export your display like so, export DISPLAY=xxx.xxx.xxx.xxx:0.0 where xxx is your ip address. The export display command may vary according to the type of shell you are using. Hope this helps.