Issue with launching Java Program - Java Library Problem?

I hope this is the right forum, I apologize if it isn't. I am having issues launching a program for a video game that uses java. One of the devs told me to post my issue here, as he doesn't know how much more help he can give with this issue. Using the java -jar command, this is the printout I get:
Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.
C:\Users\vecdran>java -version
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) Client VM (build 16.3-b01, mixed mode, sharing)
C:\Users\vecdran>chdir C:\Games\Steam\Steamapps\common\Crysis\mods\mwll\actionma
pper\dist
C:\Games\Steam\steamapps\common\crysis\Mods\mwll\Actionmapper\dist>java -jar Act
ionmapper.jar
Jun 18, 2010 2:25:19 PM org.jdesktop.application.Application$1 run
*SEVERE: Application class mwllactionmapper.MWLLActionmapperApp failed to launch*
*java.lang.NullPointerException*
at javax.swing.ImageIcon.<init>(Unknown Source)
at javax.swing.ImageIcon.<init>(Unknown Source)
at sun.swing.WindowsPlacesBar.<init>(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.updateUseShellFo
lder(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installComponent
s(Unknown Source)
at javax.swing.plaf.basic.BasicFileChooserUI.installUI(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installUI(Unknow
n Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JFileChooser.updateUI(Unknown Source)
at javax.swing.JFileChooser.setup(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at mwllactionmapper.model.ActionmapsFileModel.getMWLLDocumentsFolder(Act
ionmapsFileModel.java:141)
at mwllactionmapper.model.ActionmapsFileModel.getMWLLProfiles(Actionmaps
FileModel.java:160)
at mwllactionmapper.MWLLActionmapperView.doSelectProfile(MWLLActionmappe
rView.java:603)
at mwllactionmapper.MWLLActionmapperView.<init>(MWLLActionmapperView.jav
a:75)
at mwllactionmapper.MWLLActionmapperApp.startup(MWLLActionmapperApp.java
:21)
at org.jdesktop.application.Application$1.run(Application.java:171)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Exception in thread "AWT-EventQueue-0" java.lang.Error: Application class mwllac
tionmapper.MWLLActionmapperApp failed to launch
at org.jdesktop.application.Application$1.run(Application.java:177)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(Unknown Source)
at javax.swing.ImageIcon.<init>(Unknown Source)
at sun.swing.WindowsPlacesBar.<init>(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.updateUseShellFo
lder(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installComponent
s(Unknown Source)
at javax.swing.plaf.basic.BasicFileChooserUI.installUI(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsFileChooserUI.installUI(Unknow
n Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JFileChooser.updateUI(Unknown Source)
at javax.swing.JFileChooser.setup(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at mwllactionmapper.model.ActionmapsFileModel.getMWLLDocumentsFolder(Act
ionmapsFileModel.java:141)
at mwllactionmapper.model.ActionmapsFileModel.getMWLLProfiles(Actionmaps
FileModel.java:160)
at mwllactionmapper.MWLLActionmapperView.doSelectProfile(MWLLActionmappe
rView.java:603)
at mwllactionmapper.MWLLActionmapperView.<init>(MWLLActionmapperView.jav
a:75)
at mwllactionmapper.MWLLActionmapperApp.startup(MWLLActionmapperApp.java
:21)
at org.jdesktop.application.Application$1.run(Application.java:171)
... 8 more
C:\Games\Steam\steamapps\common\crysis\Mods\mwll\Actionmapper\dist>As you can see, my Java is completely up to date, and this is the only program I appear to have problems launching. I have no idea what to do from here. :(
PS.
I had to add the Java path to my System -> Environmental Variables -> Path variable, as it was not there from the start, and before adding it command prompt wouldn't recognize java commands. Don't know whether this indicates anything.
Edited by: vecdran on Jun 20, 2010 11:23 AM

[Bug ID 4711700|http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4711700] is eerily similar to what you're experiencing. Although the bug was reported against an older version of the JDK the last comment provides a workaround to the problem that may be helpful. Good luck.

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