I am new to Greenstone. I installed Greenstone on a Debian Linux server. When I tried to run GLI, I was first asked to provide a path to the GSDL server, then, it just died. Here is messages from the console. Can someone help me?

Thanks!
Bin Zhang
Digital Information Services Librarian
Library Information Systems
California State University, Sacramento
2000 State University Drive East
Sacramento, CA 95819-6039
+86 916-278-5664 (voice); +86 916-278-3891 (fax)
bzhang@csus.edu

Greenstone Librarian Interface (GLI)
Copyright (C) 2005, New Zealand Digital Library Project, University Of Waikato
GLI comes with ABSOLUTELY NO WARRANTY; for details see LICENSE.txt
This is free software, and you are welcome to redistribute it

Checking GSDL: /data/www/gsdl
Your environment has successfully been set up to run Greenstone
Checking Perl: /usr/bin/perl
Checking Java: /usr/bin/java

Running the Greenstone Librarian Interface...
Exception in thread "main" java.lang.IllegalArgumentException: Width (0) and hei
ght (0) cannot be <= 0
at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Direct
ColorModel.java:999)
at sun.awt.X11.XFramePeer.setIconImage(XFramePeer.java:217)
at sun.awt.X11.XFramePeer.postInit(XFramePeer.java:75)
at sun.awt.X11.XBaseWindow.init(XBaseWindow.java:117)
at sun.awt.X11.XBaseWindow.<init>(XBaseWindow.java:150)
at sun.awt.X11.XWindow.<init>(XWindow.java:86)
at sun.awt.X11.XComponentPeer.<init>(XComponentPeer.java:100)
at sun.awt.X11.XCanvasPeer.<init>(XCanvasPeer.java:22)
at sun.awt.X11.XPanelPeer.<init>(XPanelPeer.java:27)
at sun.awt.X11.XWindowPeer.<init>(XWindowPeer.java:53)
at sun.awt.X11.XDecoratedPeer.<init>(XDecoratedPeer.java:36)
at sun.awt.X11.XFramePeer.<init>(XFramePeer.java:41)
at sun.awt.X11.XToolkit.createFrame(XToolkit.java:349)
at java.awt.Frame.addNotify(Frame.java:491)
at java.awt.Window.show(Window.java:513)
at java.awt.Component.show(Component.java:1300)
at java.awt.Component.setVisible(Component.java:1253)
at org.greenstone.gatherer.Gatherer.openGUI(Gatherer.java:455)
at org.greenstone.gatherer.GathererProg.main(GathererProg.java:80)