Using:
- latest version of Glassfish 3.0.1 ( Includes Mojarra 2.0.2 compatible to IceFaces 2 Beta 1 ).
- Netbeans 6.9
- IceFaces 2 Beta1 plugin

I have updated the plugin from an Alpha3 to Beta1 and got this issue, then I wipped out my NetBeans instlalation and reinstalled it, applying the new Beta1 plugin from scratch. Still same problem. The same application used to work perfectly on Alpha3. Deploying the app the initial page loads, but any action results in an IllegalStateException with the following stack trace:

[#|2010-07-23T08:45:55.208-0500|SEVERE|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=25;_ThreadName=Thread-1;|javax.faces.FacesException: Unexpected err
or restoring state for component with id j_idt7:j_idt144:j_idt149. Cause: java.lang.IllegalStateException: java.lang.InstantiationException: com.op.framework.navigation.NavigationToolbarItem.
at com.sun.faces.application.view.StateManagementStrategyImpl$2.visit(StateManagementStrategyImpl.java:239)
at com.sun.faces.component.visit.FullVisitContext.invokeVisitCallback(FullVisitContext.java:147)
at com.icesoft.faces.component.panelseries.UISeries.visitTree(UISeries.java:830)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at com.icesoft.faces.component.panelseries.UISeries.visitColumnsAndRows(UISeries.java:914)
at com.icesoft.faces.component.panelseries.UISeries.visitTree(UISeries.java:848)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at javax.faces.component.UIForm.visitTree(UIForm.java:333)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1457)
at com.sun.faces.application.view.StateManagementStrategyImpl.restoreView(StateManagementStrategyImpl.java:223)
at com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:177)
at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:131)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:430)
at com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:143)
at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:288)
at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:199)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:110)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException: java.lang.InstantiationException: com.op.framework.navigation.NavigationToolbarItem
at javax.faces.component.StateHolderSaver.restore(StateHolderSaver.java:110)
at javax.faces.component.UIComponentBase.restoreAttachedState(UIComponentBase.java:1582)
at javax.faces.component.ComponentStateHelper.restoreState(ComponentStateHelper.java:290)
at javax.faces.component.UIComponentBase.restoreState(UIComponentBase.java:1444)
at com.icesoft.faces.component.panelseries.UISeries.restoreState(UISeries.java:644)
at com.icesoft.faces.component.panelseries.PanelSeries.restoreState(PanelSeries.java:138)
at com.sun.faces.application.view.StateManagementStrategyImpl$2.visit(StateManagementStrategyImpl.java:231)
... 48 more
Caused by: java.lang.InstantiationException: com.op.framework.navigation.NavigationToolbarItem
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at javax.faces.component.StateHolderSaver.restore(StateHolderSaver.java:107)
... 54 more