Eclipse not creating diagram

[stephen1]

Hello, I'm having trouble creating Activiti diagrams for an existing Eclipse workspace project.
I'm tested the plugin using a brand new workspace and it works as expected. When I try it for an existing project, I'm getting errors. I'm guessing it's a conflict somewhere, but I'm not entirely sure. Any thoughts?

java.lang.NullPointerException
   at org.eclipse.graphiti.ui.editor.DiagramEditor.unregisterDiagramResourceSetListener(DiagramEditor.java:1026)
   at org.eclipse.graphiti.ui.editor.DiagramEditor.dispose(DiagramEditor.java:1196)
   at org.activiti.designer.eclipse.editor.ActivitiDiagramEditor.dispose(ActivitiDiagramEditor.java:815)
   at org.eclipse.ui.internal.WorkbenchPartReference.doDisposePart(WorkbenchPartReference.java:737)
   at org.eclipse.ui.internal.EditorReference.doDisposePart(EditorReference.java:327)
   at org.eclipse.ui.internal.WorkbenchPartReference.dispose(WorkbenchPartReference.java:684)
   at org.eclipse.ui.internal.WorkbenchPage.disposePart(WorkbenchPage.java:1797)
   at org.eclipse.ui.internal.WorkbenchPage.handleDeferredEvents(WorkbenchPage.java:1501)
   at org.eclipse.ui.internal.WorkbenchPage.deferUpdates(WorkbenchPage.java:1485)
   at org.eclipse.ui.internal.WorkbenchPage.closeEditors(WorkbenchPage.java:1459)
   at org.eclipse.ui.internal.WorkbenchPage.closeEditor(WorkbenchPage.java:1523)
   at org.eclipse.graphiti.ui.editor.DefaultUpdateBehavior.closeEditor(DefaultUpdateBehavior.java:474)
   at org.eclipse.graphiti.ui.editor.DefaultUpdateBehavior.access$3(DefaultUpdateBehavior.java:460)
   at org.eclipse.graphiti.ui.editor.DefaultUpdateBehavior$1$3.run(DefaultUpdateBehavior.java:173)
   at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
   at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
   at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
   at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.runEventLoop(EventLoopProgressMonitor.java:123)
   at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.isCanceled(EventLoopProgressMonitor.java:97)
   at org.eclipse.core.internal.jobs.ThreadJob.isCanceled(ThreadJob.java:146)
   at org.eclipse.core.internal.jobs.ThreadJob.waitForRun(ThreadJob.java:235)
   at org.eclipse.core.internal.jobs.ThreadJob.joinRun(ThreadJob.java:199)
   at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:92)
   at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:286)
   at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:118)
   at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2282)
   at org.eclipse.core.internal.resources.Resource.delete(Resource.java:760)
   at org.eclipse.core.internal.resources.Resource.delete(Resource.java:746)
   at org.activiti.designer.eclipse.editor.Bpmn2DiagramCreator.dispose(Bpmn2DiagramCreator.java:226)
   at org.activiti.designer.eclipse.editor.ActivitiDiagramEditor.dispose(ActivitiDiagramEditor.java:817)
   at org.eclipse.ui.internal.WorkbenchPartReference.doDisposePart(WorkbenchPartReference.java:737)
   at org.eclipse.ui.internal.EditorReference.doDisposePart(EditorReference.java:327)
   at org.eclipse.ui.internal.WorkbenchPartReference.dispose(WorkbenchPartReference.java:684)
   at org.eclipse.ui.internal.WorkbenchPage.disposePart(WorkbenchPage.java:1797)
   at org.eclipse.ui.internal.WorkbenchPage.handleDeferredEvents(WorkbenchPage.java:1501)
   at org.eclipse.ui.internal.WorkbenchPage.deferUpdates(WorkbenchPage.java:1485)
   at org.eclipse.ui.internal.WorkbenchPage.closeEditors(WorkbenchPage.java:1459)
   at org.eclipse.ui.internal.WorkbenchPage.closeEditor(WorkbenchPage.java:1523)
   at org.eclipse.graphiti.ui.editor.DefaultUpdateBehavior.closeEditor(DefaultUpdateBehavior.java:474)
   at org.eclipse.graphiti.ui.editor.DefaultUpdateBehavior.access$3(DefaultUpdateBehavior.java:460)
   at org.eclipse.graphiti.ui.editor.DefaultUpdateBehavior$1$3.run(DefaultUpdateBehavior.java:173)
   at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
   at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
   at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
   at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
   at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
   at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
   at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
   at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
   at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
   at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
   at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
   at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
   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:344)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
   at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
   at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
   at org.eclipse.equinox.launcher.Main.main(Main.java:1386)


Regards,
Stephen

[stephen1]

I also found the following error in the logs:

org.eclipse.ui.PartInitException: Warning: Detected recursive attempt by part org.activiti.designer.editor.diagramEditor to create itself (this is probably, but not necessarily, a bug)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:586)
at org.eclipse.ui.internal.PartPane.requestActivation(PartPane.java:263)
at org.eclipse.ui.internal.EditorPane.requestActivation(EditorPane.java:98)
at org.eclipse.ui.internal.presentations.PresentablePart.setFocus(PresentablePart.java:192)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:94)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:269)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:274)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.handleMouseDown(AbstractTabFolder.java:344)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder$3.mouseDown(AbstractTabFolder.java:78)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:191)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.runEventLoop(EventLoopProgressMonitor.java:123)
at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.isCanceled(EventLoopProgressMonitor.java:97)
at org.eclipse.core.internal.jobs.ThreadJob.isCanceled(ThreadJob.java:146)
at org.eclipse.core.internal.jobs.ThreadJob.waitForRun(ThreadJob.java:235)
at org.eclipse.core.internal.jobs.ThreadJob.joinRun(ThreadJob.java:199)
at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:92)
at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:286)
at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:118)
at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2282)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2339)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2326)
at org.activiti.designer.eclipse.editor.FileService.saveInWorkspaceRunnable(FileService.java:117)
at org.activiti.designer.eclipse.editor.FileService.save(FileService.java:55)
at org.activiti.designer.eclipse.editor.FileService.createEmfFileForDiagram(FileService.java:50)
at org.activiti.designer.eclipse.editor.Bpmn2DiagramCreator.createDiagram(Bpmn2DiagramCreator.java:67)
at org.activiti.designer.eclipse.editor.ActivitiDiagramEditor.createNewDiagramEditorInput(ActivitiDiagramEditor.java:167)
at org.activiti.designer.eclipse.editor.ActivitiDiagramEditor.init(ActivitiDiagramEditor.java:108)
at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:828)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:647)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313)
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
at org.eclipse.ui.internal.PartStack.presentationSelectionChanged(PartStack.java:834)
at org.eclipse.ui.internal.PartStack.access$1(PartStack.java:823)
at org.eclipse.ui.internal.PartStack$1.selectPart(PartStack.java:137)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:133)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:269)
at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:278)
at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder.access$1(DefaultTabFolder.java:1)
at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder$2.handleEvent(DefaultTabFolder.java:88)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:774)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:2746)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1433)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:257)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
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:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)