Conexao EJBQL iReport

Olá galera estou tentando criar uma conexão ejbql no iReport 3.7.0 porém não estou conseguindo! Já atualizei os jar que estou utilizando no meu projeto na lib do iReport, setei o jar da aplicação no classpath porém obtenho o seguinte erro:

java.lang.IllegalAccessError: tried to access method org.hibernate.engine.CascadeStyle.<init>()V from class org.hibernate.engine.EJB3CascadeStyle$1 at org.hibernate.engine.EJB3CascadeStyle$1.<init>(EJB3CascadeStyle.java:24) at org.hibernate.engine.EJB3CascadeStyle.<clinit>(EJB3CascadeStyle.java:19) at org.hibernate.ejb.event.EJB3PersistEventListener.<clinit>(EJB3PersistEventListener.java:19) at org.hibernate.ejb.EventListenerConfigurator.<init>(EventListenerConfigurator.java:81) at org.hibernate.ejb.Ejb3Configuration.<init>(Ejb3Configuration.java:136) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:124) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83) at com.jaspersoft.ireport.designer.connection.EJBQLConnection.getEntityManager(EJBQLConnection.java:129) at com.jaspersoft.ireport.designer.connection.EJBQLConnection$1.run(EJBQLConnection.java:179) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178) at java.awt.Dialog$1.run(Dialog.java:1047) at java.awt.Dialog$3.run(Dialog.java:1099) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:1097) at java.awt.Component.show(Component.java:1447) at java.awt.Component.setVisible(Component.java:1400) at java.awt.Window.setVisible(Window.java:824) at java.awt.Dialog.setVisible(Dialog.java:987) at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog.jButtonModifyParameterActionPerformed(ConnectionsDialog.java:526) at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog.access$500(ConnectionsDialog.java:47) at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog$8.actionPerformed(ConnectionsDialog.java:235) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6134) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5899) at java.awt.Container.processEvent(Container.java:2023) at java.awt.Component.dispatchEventImpl(Component.java:4501) at java.awt.Container.dispatchEventImpl(Container.java:2081) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895) at java.awt.Container.dispatchEventImpl(Container.java:2067) at java.awt.Window.dispatchEventImpl(Window.java:2458) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178) at java.awt.Dialog$1.run(Dialog.java:1047) at java.awt.Dialog$3.run(Dialog.java:1099) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Dialog.show(Dialog.java:1097) at java.awt.Component.show(Component.java:1447) at java.awt.Component.setVisible(Component.java:1400) at java.awt.Window.setVisible(Window.java:824) at java.awt.Dialog.setVisible(Dialog.java:987) at com.jaspersoft.ireport.designer.connection.gui.ConnectionsDialog.setVisible(ConnectionsDialog.java:632) at com.jaspersoft.ireport.designer.menu.DatasourcesAction.performAction(DatasourcesAction.java:46) at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:118) at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:77) at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:114) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272) at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272) at java.awt.Component.processMouseEvent(Component.java:6134) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at org.openide.awt.ToolbarButton.processMouseEvent(ToolbarButton.java:61) at java.awt.Component.processEvent(Component.java:5899) at java.awt.Container.processEvent(Container.java:2023) at java.awt.Component.dispatchEventImpl(Component.java:4501) at java.awt.Container.dispatchEventImpl(Container.java:2081) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895) at java.awt.Container.dispatchEventImpl(Container.java:2067) at java.awt.Window.dispatchEventImpl(Window.java:2458) at java.awt.Component.dispatchEvent(Component.java:4331) [catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) 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)
Já revirei a net e não achei nada sobre esse erro.

Isso se chama cagada da JasperSoft.

Use o iReport 3.0, as versões que usam a plataforma do netbeans estão muito lentas.

E vc tem que copiar as libs em uma pasta la pra parar de dar esse erro.

Realmente um porre esta essas novas versões do iReport.

Então vc me aconselha usar a versão 3.0? Kra desenvolvi uma pequena aplicação com jpa/hibernate mais estou sofrendo d+ com os relatórios! Não consigo de forma alguma extrair o dados de relacionamentos que são representados por Collections.