can't open the program anymore ... all i get now is an "ExceptionInitializerError"

here are the details:

java.lang.NullPointerException
at com.limegroup.gnutella.SettingsManager.addDirector y(Compiled Code)
at com.limegroup.gnutella.SettingsManager.validateFil e(Compiled Code)
at com.limegroup.gnutella.SettingsManager.<init>(Sett ingsManager.java:502)
at
at
at com.limegroup.gnutella.gui.Initializer.<init>(Comp iled Code)
at
at com.limegroup.gnutella.gui.Main.main(Main.java:17)
at com.zerog.lax.LAX.launch(Compiled Code)
at com.zerog.lax.LAX.main(Unknown Source)
at com.apple.mrj.JManager.JMStaticMethodDispatcher.ru n(JMAWTContextImpl.java)
at java.lang.Thread.run(Thread.java)

anyone know what i should do??? please advise .. thanks