java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.util.TimeZone.parseCustomTimeZone(TimeZone.java:780)
at java.util.TimeZone.getTimeZone(TimeZone.java:484)
at java.util.TimeZone.setDefaultZone(TimeZone.java:587)
at java.util.TimeZone.getDefaultRef(TimeZone.java:544)
at java.util.TimeZone.getDefault(TimeZone.java:531)
at java.text.SimpleDateFormat.initialize(SimpleDateFormat.java:521)
at java.text.SimpleDateFormat.(SimpleDateFormat.java:464)
at java.text.SimpleDateFormat.(SimpleDateFormat.java:445)
at net.sf.robocode.settings.SettingsManager.(SettingsManager.java:153)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at org.picocontainer.injectors.AbstractInjector.newInstance(AbstractInjector.java:157)
at org.picocontainer.injectors.ConstructorInjector.instantiate(ConstructorInjector.java:222)
at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:195)
at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:284)
at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:218)
at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:66)
at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:80)
at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:574)
at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:535)
at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:525)
at org.picocontainer.parameters.BasicComponentParameter.resolveInstance(BasicComponentParameter.java:164)
at org.picocontainer.parameters.ComponentParameter.resolveInstance(ComponentParameter.java:123)
at org.picocontainer.injectors.SingleMemberInjector.getMemberArguments(SingleMemberInjector.java:55)
at org.picocontainer.injectors.ConstructorInjector.getMemberArguments(ConstructorInjector.java:230)
at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:188)
at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:284)
at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:218)
at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:66)
at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:80)
at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:574)
at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:535)
at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:515)
at org.picocontainer.classname.DefaultClassLoadingPicoContainer.getComponent(DefaultClassLoadingPicoContainer.java:186)
at net.sf.robocode.core.Container.getComponent(Container.java:245)
at net.sf.robocode.core.RobocodeMainBase.robocodeMain(RobocodeMainBase.java:42)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at net.sf.robocode.security.HiddenAccess.robocodeMain(HiddenAccess.java:286)
at robocode.Robocode.main(Robocode.java:39)

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