Can't sign In Because of this

I WANT TO GET ON LIMEWIRE
Here is the error message i get that send cancel discard box



LimeWire version 4.9.11
Java version 1.5.0_04 from Sun Microsystems Inc.
Windows XP v. 5.1 on x86
Free/total memory: 1566448/4128768

FATAL ERROR!

java.lang.NullPointerException
at com.sun.java.swing.plaf.windows.XPStyle.getString( Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle.getString( Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle.getBoolean (Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle.access$100 (Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle$Skin.<init >(Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle$Skin.<init >(Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle.getSkin(Un known Source)
at com.sun.java.swing.plaf.windows.WindowsTreeUI$Expa ndedIcon.<init>(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsTreeUI$Expa ndedIcon.createExpandedIcon(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsLookAndFeel .initComponentDefaults(Unknown Source)
at com.jgoodies.plaf.windows.ExtWindowsLookAndFeel.in itComponentDefaults(ExtWindowsLookAndFeel.java:206 )
at javax.swing.plaf.basic.BasicLookAndFeel.getDefault s(Unknown Source)
at javax.swing.UIManager.setLookAndFeel(Unknown Source)
at javax.swing.UIManager.setLookAndFeel(Unknown Source)
at com.limegroup.gnutella.gui.ResourceManager.themeCh anged(ResourceManager.java:598)
at com.limegroup.gnutella.gui.ResourceManager.<init>( ResourceManager.java:405)
at com.limegroup.gnutella.gui.ResourceManager.instanc e(ResourceManager.java:383)
at com.limegroup.gnutella.gui.Initializer.initialize( Initializer.java:185)
at com.limegroup.gnutella.gui.GUILoader.load(GUILoade r.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.limegroup.gnutella.gui.Main.main(Main.java:44)


-- listing session information --
Current thread: main
Active Threads: 10

-- listing threads --
main: 1
Thread-3: 1
device search response: 1
NIODispatcher: 1
AWT-EventQueue-0: 1
AWT-Windows: 1
AWT-Shutdown: 1
Java2D Disposer: 1
TimerQueue: 1
Image Fetcher 0: 1


-- listing properties --
APP_HEIGHT=968
FRACTIONAL_UPTIME=0.011942162
LAST_EXPIRE_TIME=1123905264015
SESSIONS=44
RUN_ONCE=true
COUNTRY=
SHOW_TOTD=false
CLIENT_ID=0BAD061EC04344E2420E220E1627A700
LAST_SHUTDOWN_TIME=1123035005312
TOTAL_UPTIME=63861
RUN_ON_STARTUP=false
UNSET_FIREWALLED_FROM_CONNECTBACK=true
APP_WIDTH=1280
INSTALLED=true
LAST_GWEBCACHE_FETCH_TIME=1122432123765
CONNECTION_SPEED=350
WINDOW_Y=-4
WINDOW_X=-4