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Fail to open diagrams on another machine running the same version of Papyrus (2025-06).

Reproduction steps:

  1. On a Ubuntu 22.04.5 LTS machine running Papyrus 2025-06 (Papyrus-Desktop Version: 2025-06 (4.36) Build id: 2025-06-12T13:26:51Z OS: Linux, v.6.8.0-65-generic, x86_64 / gtk 3.24.33, WebKit 2.48.5 Java vendor: Eclipse Adoptium Java runtime version: 21.0.7+6-LTS Java version: 21.0.7), create an UML project, create some Sirius diagrams.
  2. Commit to Git.
  3. On another Windows machine running the same Papyrus 2025-06 (Papyrus-Desktop Version: 2025-06 (4.36) Build id: 2025-06-12T13:26:51Z OS: Windows 11, v.10.0, x86_64 / win32 Java vendor: Eclipse Adoptium Java runtime version: 21.0.7+6-LTS Java version: 21.0.7), clone from Git and import the project.
  4. Try to open a diagram from the model explorer.

Expected result: The diagam is correctly displayed.

Actual result: The diagram is not displayed. Exception happened (screenshot and the project files attached). Tried deleting Papyrus, the workspace, .eclipse folder and .p2 folder and downloading/unziping Papyrus to restart fresh but problem persists.

Stack trace:

java.lang.ExceptionInInitializerError at org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart$6.run(ConnectionEditPart.java:1263) at org.eclipse.gmf.runtime.diagram.ui.util.EditPartUtil.synchronizeRunnableToMainThread(EditPartUtil.java:107) at org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart.installBendpointEditPolicy(ConnectionEditPart.java:1255) at org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart.createDefaultEditPolicies(ConnectionEditPart.java:364) at org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionNodeEditPart.createDefaultEditPolicies(ConnectionNodeEditPart.java:70) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramEdgeEditPart.createDefaultEditPolicies(AbstractDiagramEdgeEditPart.java:169) at org.eclipse.sirius.diagram.ui.internal.edit.parts.DEdgeEditPart.createDefaultEditPolicies(DEdgeEditPart.java:57) at org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart.createEditPolicies(ConnectionEditPart.java:346) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:257) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gef.editparts.AbstractConnectionEditPart.addNotify(AbstractConnectionEditPart.java:102) at org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart.addNotify(ConnectionEditPart.java:1090) at org.eclipse.gef.editparts.AbstractConnectionEditPart.setParent(AbstractConnectionEditPart.java:276) at org.eclipse.gef.editparts.AbstractConnectionEditPart.setTarget(AbstractConnectionEditPart.java:313) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addTargetConnection(AbstractGraphicalEditPart.java:289) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refreshTargetConnections(AbstractGraphicalEditPart.java:714) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:622) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:863) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.refresh(GraphicalEditPart.java:853) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramNodeEditPart.refresh(AbstractDiagramNodeEditPart.java:132) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:259) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:220) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.addChild(GraphicalEditPart.java:1318) at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:796) at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:748) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:620) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:863) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.refresh(GraphicalEditPart.java:853) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:259) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeCompartmentEditPart.addNotify(ShapeCompartmentEditPart.java:784) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:220) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.addChild(GraphicalEditPart.java:1318) at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:796) at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:748) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:620) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:863) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.refresh(GraphicalEditPart.java:853) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramElementContainerEditPart.refresh(AbstractDiagramElementContainerEditPart.java:292) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:259) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:220) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.addChild(GraphicalEditPart.java:1318) at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:796) at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:748) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:620) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:863) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.refresh(GraphicalEditPart.java:853) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:259) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeCompartmentEditPart.addNotify(ShapeCompartmentEditPart.java:784) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:220) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.addChild(GraphicalEditPart.java:1318) at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:796) at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:748) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:620) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:863) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.refresh(GraphicalEditPart.java:853) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDiagramElementContainerEditPart.refresh(AbstractDiagramElementContainerEditPart.java:292) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:259) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:220) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.addChild(GraphicalEditPart.java:1318) at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:796) at org.eclipse.sirius.diagram.ui.edit.api.part.AbstractDDiagramEditPart.refreshChildren(AbstractDDiagramEditPart.java:325) at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:748) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:620) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:863) at org.eclipse.papyrus.infra.emf.readonly.PapyrusROTransactionalEditingDomain.runExclusive(PapyrusROTransactionalEditingDomain.java:273) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.refresh(GraphicalEditPart.java:853) at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:259) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:227) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:220) at org.eclipse.gef.editparts.SimpleRootEditPart.setContents(SimpleRootEditPart.java:116) at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:673) at org.eclipse.gmf.runtime.diagram.ui.parts.DiagramGraphicalViewer.setContents(DiagramGraphicalViewer.java:353) at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:682) at org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor.initializeGraphicalViewerContents(DiagramEditor.java:883) at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramEditorImpl.initializeGraphicalViewerContents(DDiagramEditorImpl.java:1617) at org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor.initializeGraphicalViewer(DiagramEditor.java:876) at org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditorWithFlyOutPalette.initializeGraphicalViewer(DiagramEditorWithFlyOutPalette.java:118) at org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor.initializeGraphicalViewer(DiagramDocumentEditor.java:186) at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramEditorImpl.initializeGraphicalViewer(DDiagramEditorImpl.java:1633) at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramEditorImpl.createOriginalGraphicalViewer(DDiagramEditorImpl.java:1590) at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramEditorImpl.createMainDiagramSection(DDiagramEditorImpl.java:1516) at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramEditorImpl.createGraphicalViewer(DDiagramEditorImpl.java:1479) at org.eclipse.gef.ui.parts.GraphicalEditor.createPartControl(GraphicalEditor.java:173) at org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor.createPartControl(DiagramEditor.java:1591) at org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditorWithFlyOutPalette.createPartControl(DiagramEditorWithFlyOutPalette.java:330) at org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor.createPartControl(DiagramDocumentEditor.java:1540) at org.eclipse.sirius.diagram.ui.tools.internal.editor.DDiagramEditorImpl.createPartControl(DDiagramEditorImpl.java:645) at org.eclipse.papyrus.infra.core.sasheditor.internal.EditorPart.createEditorPartControl(EditorPart.java:265) at org.eclipse.papyrus.infra.core.sasheditor.internal.EditorPart.createPartControl(EditorPart.java:163) at org.eclipse.papyrus.infra.core.sasheditor.internal.TabFolderPart.createChildPart(TabFolderPart.java:1059) at org.eclipse.papyrus.infra.core.sasheditor.internal.TabFolderPart.createTabItem(TabFolderPart.java:980) at org.eclipse.papyrus.infra.core.sasheditor.internal.TabFolderPart.synchronize2(TabFolderPart.java:904) at org.eclipse.papyrus.infra.core.sasheditor.internal.RootPart.synchronize2(RootPart.java:141) at org.eclipse.papyrus.infra.core.sasheditor.internal.SashWindowsContainer.refreshTabsInternal(SashWindowsContainer.java:760) at org.eclipse.papyrus.infra.core.sasheditor.internal.SashWindowsContainer.refreshTabs(SashWindowsContainer.java:713) at org.eclipse.papyrus.infra.core.sasheditor.editor.AbstractMultiPageSashEditor.doRefreshTabs(AbstractMultiPageSashEditor.java:250) at org.eclipse.papyrus.infra.core.sasheditor.editor.AbstractMultiPageSashEditor$2.run(AbstractMultiPageSashEditor.java:243) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:183) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:133) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4870) at org.eclipse.papyrus.infra.core.sasheditor.editor.AbstractMultiPageSashEditor.refreshTabs(AbstractMultiPageSashEditor.java:239) at org.eclipse.papyrus.infra.ui.editor.CoreMultiDiagramEditor.refreshTabs(CoreMultiDiagramEditor.java:1261) at org.eclipse.papyrus.infra.ui.editor.CoreMultiDiagramEditor$6.run(CoreMultiDiagramEditor.java:1250) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4111) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3727) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:678) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:627) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575) at org.eclipse.equinox.launcher.Main.run(Main.java:1431) Caused by: java.lang.IllegalArgumentException: Argument cannot be null at org.eclipse.swt.SWT.error(SWT.java:4926) at org.eclipse.swt.SWT.error(SWT.java:4860) at org.eclipse.swt.SWT.error(SWT.java:4831) at org.eclipse.swt.graphics.Cursor.(Cursor.java:274) at org.eclipse.gmf.runtime.gef.ui.internal.l10n.Cursors.(Cursors.java:40) ... 142 more

Screenshot 2025-08-26 134932.png

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