java.lang.NoClassDefFoundError: Could not initialize class com.ibm.ws.util.WsObjectInputStream
   at com.ibm.ws.management.connector.soap.GenericSerializer.unmarshall(GenericSerializer.java:219)
   at org.apache.soap.util.xml.XMLJavaMappingRegistry.unmarshall(XMLJavaMappingRegistry.java:0)
   at org.apache.soap.encoding.soapenc.ParameterSerializer.unmarshall(ParameterSerializer.java:0)
   at org.apache.soap.util.xml.XMLJavaMappingRegistry.unmarshall(XMLJavaMappingRegistry.java:0)
   at org.apache.soap.rpc.RPCMessage.unmarshall(RPCMessage.java:0)
   at org.apache.soap.rpc.RPCMessage.extractFromEnvelope(RPCMessage.java:0)
   at org.apache.soap.rpc.Response.extractFromEnvelope(Response.java:0)
   at org.apache.soap.rpc.Call.invoke(Call.java:0)
   at com.ibm.ws.management.connector.soap.SOAPConnectorClient$8.run(SOAPConnectorClient.java:707)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:125)
   at com.ibm.ws.management.connector.soap.SOAPConnectorClient.invokeTemplate(SOAPConnectorClient.java:700)
   at com.ibm.ws.management.connector.soap.SOAPConnectorClient.isAlive(SOAPConnectorClient.java:488)
   at com.ibm.ws.management.connector.soap.SOAPConnectorClient.invoke(SOAPConnectorClient.java:418)
   at $Proxy27.isAlive(.java:0)
   at com.ibm.ws.management.AdminClientImpl.isAlive(AdminClientImpl.java:84)
   at com.ibm.websphere.management.AdminClientFactory.createAdminClient(AdminClientFactory.java:230)
   at com.ibm.ws.management.application.j2ee.deploy.spi.DeploymentManagerImpl.connect(DeploymentManagerImpl.java:178)
   at com.ibm.ws.management.application.j2ee.deploy.spi.factories.DeploymentFactoryImpl.getDeploymentManager(DeploymentFactoryImpl.java:186)
   at org.netbeans.modules.j2ee.websphere6.WSDeploymentManager.updateDeploymentManager(WSDeploymentManager.java:445)
   at org.netbeans.modules.j2ee.websphere6.WSDeploymentManager.getTargets(WSDeploymentManager.java:934)
   at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.getTargetMap(ServerInstance.java:556)
   at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.getTargets(ServerInstance.java:514)
   at org.netbeans.modules.j2ee.deployment.impl.ServerInstance._retrieveTarget(ServerInstance.java:1764)
   at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.isSuspended(ServerInstance.java:947)
   at org.netbeans.modules.j2ee.deployment.impl.ServerInstance$1.run(ServerInstance.java:386)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NoClassDefFoundError: Could not initialize class com.ibm.ws.util.WsObjectInputStream
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:422)
   at org.netbeans.modules.j2ee.deployment.impl.ServerInstance.refresh(ServerInstance.java:362)
   at org.netbeans.modules.j2ee.deployment.impl.ui.actions.RefreshAction.performActionImpl(RefreshAction.java:97)
   at org.netbeans.modules.j2ee.deployment.impl.ui.actions.RefreshAction.performActionImpl(RefreshAction.java:91)
   at org.netbeans.modules.j2ee.deployment.impl.ui.actions.RefreshAction.performAction(RefreshAction.java:71)
   at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:586)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:583)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
   at java.awt.Component.processMouseEvent(Component.java:6263)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6028)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:137)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)