Hey guys. Not sure if this is a bug or if it is just not supported, it appears with the current version of Drools 5 and JBoss Tools. If I open a brl created with the BRMS I get the following Exception in Eclipse: com.thoughtworks.xstream.mapper.CannotResolveClassException: nature : nature                 at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:86)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:96)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)                 at com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:52)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.determineType(AbstractReflectionConverter.java:347)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:208)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)                 at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)                 at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71)                 at com.thoughtworks.xstream.converters.collections.ArrayConverter.unmarshal(ArrayConverter.java:55)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)                 at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:218)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)                 at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)                 at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71)                 at com.thoughtworks.xstream.converters.collections.ArrayConverter.unmarshal(ArrayConverter.java:55)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)                 at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:218)                 at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)                 at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)                 at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)                 at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)                 at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)                 at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)                 at com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)                 at com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)                 at org.drools.guvnor.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:83)                 at org.drools.eclipse.rulebuilder.editors.BrlPage.setModelXML(BrlPage.java:44)                 at org.drools.eclipse.rulebuilder.editors.RuleEditor.pageChange(RuleEditor.java:274)                 at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:973)                 at org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEditor.java:623)                 at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:314)                 at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:661)                 at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:428)                 at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:594)                 at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:266)                 at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2820)                 at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2729)                 at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2721)                 at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2673)                 at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)                 at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2668)                 at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2652)                 at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:337)                 at org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:325)                 at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:187)                 at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)                 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)                 at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)                 at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)                 at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)                 at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)                 at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)                 at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)                 at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)                 at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)                 at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)                 at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)                 at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)                 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)                 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)                 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)                 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)                 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)                 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)                 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)                 at java.lang.reflect.Method.invoke(Unknown Source)                 at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)                 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)                 at org.eclipse.equinox.launcher.Main.run(Main.java:1236) Thanks Bernd -- Unsere Seminare: www.camunda.com/seminare/ Blog: www.bpm-guide.de --------------------------------------------- camunda services GmbH - The Business Process Company Zossener Straße 55-58 - 10961 Berlin www.camunda.com - info(a)camunda.com --------------------------------------------- Bernd Rücker Geschäftsführer Telefon +49 +49 30 664040 901 Mobil +49 171 1473461 bernd.ruecker(a)camunda.com --------------------------------------------- Amtsgericht Charlottenburg: HRB 113230 B Geschäftsführer: Jakob Freund, Bernd Rücker --------------------------------------------- EJB-3-Buch: http://www.ejbbuch.de/ BPMN-Buch: http://www.hanser.de/buch.asp?isbn=978-3-446-41768-7 _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev