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.