title: WSO2 IS 5.9 fails to start
body: <p>after updating the OS linux where I have installed IS 5.9, wso2 is failed to start and shows this error:</p>
  <pre><code>Failed to activate Registry Core bundle java.lang.NullPointerException
          at org.wso2.carbon.registry.core.jdbc.handlers.builtin.SymLinkHandler.setTargetPoint(SymLinkHandler.java:481)
          at org.wso2.carbon.registry.core.utils.RegistryUtils.registerHandlerForSymbolicLinks(RegistryUtils.java:1578)
          at org.wso2.carbon.registry.core.utils.RegistryUtils.registerMountPoints(RegistryUtils.java:1105)
          at org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.configure(EmbeddedRegistryService.java:222)
          at org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.&lt;init&gt;(EmbeddedRegistryService.java:99)
          at org.wso2.carbon.registry.core.internal.RegistryCoreServiceComponent.getEmbeddedRegistryService(RegistryCoreServiceComponent.java:598)
          at org.wso2.carbon.registry.core.internal.RegistryCoreServiceComponent.buildRegistryService(RegistryCoreServiceComponent.java:520)
          at org.wso2.carbon.registry.core.internal.RegistryCoreServiceComponent.activate(RegistryCoreServiceComponent.java:123)
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
          at java.lang.reflect.Method.invoke(Method.java:498)
          at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
          at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
          at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
          at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
          at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
          at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
          at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
          at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:113)
          at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:985)
          at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:234)
          at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
          at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:866)
          at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:804)
          at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
          at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:228)
          at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:525)
          at org.wso2.carbon.user.core.internal.Activator.startDeploy(Activator.java:73)
          at org.wso2.carbon.user.core.internal.BundleCheckActivator.start(BundleCheckActivator.java:61)
          at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:842)
          at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
          at java.security.AccessController.doPrivileged(Native Method)
          at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:834)
          at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:791)
          at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1013)
          at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
          at org.eclipse.osgi.container.Module.doStart(Module.java:598)
          at org.eclipse.osgi.container.Module.start(Module.java:462)
          at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel$1.run(ModuleContainer.java:1820)
          at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor$2$1.execute(EquinoxContainerAdaptor.java:150)
          at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1813)
          at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1770)
          at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1735)
          at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1661)
          at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
          at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:234)
          at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:345)
  </code></pre>
  <p>Is there a way to fix it?</p>
  <p>Thanks</p>