Hi, I am trying to run a GUI implemented in Swing on afs. But got this exception: - >Exception in thread "main" java.lang.InternalError: Can't con nect to X11 window server using ':0.0' as the value of the DISPLAY variable. at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:5 9) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:120) at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvi ronment.java:58) at java.awt.Window.<init>(Window.java:188) at java.awt.Frame.<init>(Frame.java:315) at java.awt.Frame.<init>(Frame.java:262) at javax.swing.JFrame.<init>(JFrame.java:141) at CompanyServer.<init>(CompanyServer.java:53) at CompanyServer.main(CompanyServer.java:171) Anybody knows how to fix this? Thanks in advance! Florence