Установка ADempiere 3.7.0 на Debian 6.0.6

Всё далаю как в статье http://www.adempiere.com/Installing_ADempiere_3.7.0_on_Ubuntu_11.04
Но при выполнение действий:

cd /opt/Adempiere
./RUN_setup.sh

Вылетает ошибка:

root@server:/opt/Adempiere# ./RUN_setup.sh
Install ADempiere Server
===================================
Setup Dialog
===================================
*** 2012-10-13 15:39:58.113 Adempiere Log (CLogConsole) ***
15:39:58.113 CLogMgt.setLevel: CONFIG
Exception in thread "main" java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:173)
at java.awt.Window.<init>(Window.java:437)
at java.awt.Frame.<init>(Frame.java:419)
at java.awt.Frame.<init>(Frame.java:384)
at javax.swing.JFrame.<init>(JFrame.java:174)
at org.compiere.swing.CFrame.<init>(CFrame.java:45)
at org.compiere.install.Setup.<init>(Setup.java:60)
at org.compiere.install.Setup.main(Setup.java:165)

*** 2012-10-13 15:39:58.115 Adempiere Log (CLogConsole) ***
===================================
===================================
Make .sh executable
Install ADempiere Server
.: 8: Can't open ./myEnvironment.sh

Как исправить это???