For now ACE View works only with Protege 4.0 , see discussion earlier on the list. <div class="gmail_quote">2010/7/14 Danica Damljanovic <<a href="mailto:danica.damljanovic@gmail.com">danica.damljanovic@gmail.com</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi, I was trying ACE View with the Protege 4.1. beta, and it throws the following exception when I try to create a new ontology: Error 1 Logged at Wed Jul 14 22:17:29 BST 2010 NoClassDefFoundError: javax/swing/JFrame java.lang.Class.getDeclaredConstructors0(Native Method) java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) java.lang.Class.getConstructor0(Class.java:2699) java.lang.Class.newInstance0(Class.java:326) java.lang.Class.newInstance(Class.java:308) org.protege.editor.core.plugin.PluginUtilities.getExtensionObject(PluginUtilities.java:131) org.protege.editor.core.plugin.ExtensionInstantiator.instantiate(ExtensionInstantiator.java:74) org.protege.editor.core.plugin.AbstractProtegePlugin.newInstance(AbstractProtegePlugin.java:35) org.protege.editor.core.ui.menu.MenuActionPluginJPFImpl.newInstance(MenuActionPluginJPFImpl.java:138) org.protege.editor.core.ui.menu.MenuActionPluginJPFImpl.newInstance(MenuActionPluginJPFImpl.java:31) org.protege.editor.core.ui.menu.MenuBuilder.add(MenuBuilder.java:150) org.protege.editor.core.ui.menu.MenuBuilder.add(MenuBuilder.java:111) org.protege.editor.core.ui.menu.MenuBuilder.buildMenu(MenuBuilder.java:74) org.protege.editor.core.ui.workspace.WorkspaceFrame.createMenuBar(WorkspaceFrame.java:171) org.protege.editor.core.ui.workspace.WorkspaceFrame.createUI(WorkspaceFrame.java:141) org.protege.editor.core.ui.workspace.WorkspaceFrame.<init>(WorkspaceFrame.java:59) org.protege.editor.core.ui.workspace.WorkspaceManager.addWorkspace(WorkspaceManager.java:37) org.protege.editor.core.editorkit.EditorKitManager.addEditorKit(EditorKitManager.java:45) org.protege.editor.core.ProtegeManager.createAndSetupNewEditorKit(ProtegeManager.java:130) org.protege.editor.core.ProtegeWelcomeFrame$ProtegeWelcomePanel$1.actionPerformed(ProtegeWelcomeFrame.java:114) org.protege.editor.core.ui.util.LinkLabel.activateLink(LinkLabel.java:102) org.protege.editor.core.ui.util.LinkLabel.access$100(LinkLabel.java:30) org.protege.editor.core.ui.util.LinkLabel$1.mouseReleased(LinkLabel.java:68) java.awt.Component.processMouseEvent(Component.java:6216) javax.swing.JComponent.processMouseEvent(JComponent.java:3265) java.awt.Component.processEvent(Component.java:5981) java.awt.Container.processEvent(Container.java:2041) java.awt.Component.dispatchEventImpl(Component.java:4583) java.awt.Container.dispatchEventImpl(Container.java:2099) java.awt.Component.dispatchEvent(Component.java:4413) java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556) java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220) java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150) java.awt.Container.dispatchEventImpl(Container.java:2085) java.awt.Window.dispatchEventImpl(Window.java:2475) java.awt.Component.dispatchEvent(Component.java:4413) java.awt.EventQueue.dispatchEvent(EventQueue.java:599) java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) java.awt.EventDispatchThread.run(EventDispatchThread.java:122) --------------------------------------------------------------------------------------------------- Anybody has a clue? It used to work with 4.0. beta without any problems. -- Best, Danica Damljanovic -- Research Associate GATE team <a href="http://gate.ac.uk" target="_blank">http://gate.ac.uk</a> Natural Language Processing Group University of Sheffield <a href="http://www.dcs.shef.ac.uk/%7Edanica" target="_blank">http://www.dcs.shef.ac.uk/~danica</a> _______________________________________________ attempto mailing list <a href="mailto:attempto@lists.ifi.uzh.ch">attempto@lists.ifi.uzh.ch</a> <a href="https://lists.ifi.uzh.ch/listinfo/attempto" target="_blank">https://lists.ifi.uzh.ch/listinfo/attempto</a> </blockquote></div> -- Jean-Marc Vanel Consulting, services, training, Rule-based programming, Semantic Web <a href="http://jmvanel.free.fr/">http://jmvanel.free.fr/</a> EulerGUI, a turntable GUI for Semantic Web + rules, XML, UML, eCore, Java bytecode +33 (0)6 89 16 29 52 -- +33 (0)1 39 55 58 16 ( we rarely listen to voice messages, please send a mail instead )