WindowBuilder encountered unexpected internal error. This could be caused by a WindowBuilder bug or by a misconfiguration issue, conflict, partialupdate, etc.

[matheuscomaru]

Internal Error

WindowBuilder encountered unexpected internal error.

This could be caused by a WindowBuilder bug or by a misconfiguration issue, conflict, partialupdate, etc.

java.lang.IllegalAccessError: class org.eclipse.wb.core.controls.CCombo3 tried to access method 'void org.eclipse.swt.widgets.TypedListener.(java.util.EventListener)' (org.eclipse.wb.core.controls.CCombo3 is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @44aba87b; org.eclipse.swt.widgets.TypedListener is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2e882599)

Hide stack trace.

Stack trace:
java.lang.IllegalAccessError: class org.eclipse.wb.core.controls.CCombo3 tried to access method 'void org.eclipse.swt.widgets.TypedListener.(java.util.EventListener)' (org.eclipse.wb.core.controls.CCombo3 is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @44aba87b; org.eclipse.swt.widgets.TypedListener is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2e882599)
at org.eclipse.wb.core.controls.CCombo3.addSelectionListener(CCombo3.java:308)
at org.eclipse.wb.internal.core.model.property.editor.AbstractComboPropertyEditor.activate(AbstractComboPropertyEditor.java:63)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable.activateEditor(PropertyTable.java:210)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable$PropertyEditDomain.mouseDown(PropertyTable.java:683)
at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMousePressed(DomainEventDispatcher.java:396)
at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseDown(LightweightSystem.java:568)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:209)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4404)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1173)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4202)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3790)
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:663)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:570)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:178)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271)
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:668)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:605)
at org.eclipse.equinox.launcher.Main.run(Main.java:1481)

Full context stack trace:
java.lang.IllegalAccessError: class org.eclipse.wb.core.controls.CCombo3 tried to access method 'void org.eclipse.swt.widgets.TypedListener.(java.util.EventListener)' (org.eclipse.wb.core.controls.CCombo3 is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @44aba87b; org.eclipse.swt.widgets.TypedListener is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @2e882599)
at org.eclipse.wb.core.controls.CCombo3.addSelectionListener(CCombo3.java:308)
at org.eclipse.wb.internal.core.model.property.editor.AbstractComboPropertyEditor.activate(AbstractComboPropertyEditor.java:63)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable.activateEditor(PropertyTable.java:210)
at org.eclipse.wb.internal.core.model.property.table.PropertyTable$PropertyEditDomain.mouseDown(PropertyTable.java:683)
at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMousePressed(DomainEventDispatcher.java:396)
at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseDown(LightweightSystem.java:568)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:209)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4404)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1173)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4202)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3790)
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:663)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:570)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:178)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271)
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:668)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:605)
at org.eclipse.equinox.launcher.Main.run(Main.java:1481)

[ptziegler]

What version of WindowBuilder are you using? And what version of the Eclipse IDE?

[matheuscomaru]

Eclipse.: 2024-12 (4.34.0)
Window Builder.: 1.19.0

Fiz a instalação hoje da IDE e também do plugin WindowBuilder.

[ptziegler]

Thanks!

Eclipse.: 2024-12 (4.34.0)
Window Builder.: 1.19.0

That'll be it. This change in SWT introduced a binary incompatibility because WindowBuilder 1.19.0 is unintentionally using a method that was not yet made public in 3.128.0.

So in short: You either need to downgrade to WindowBuilder 1.18 or to upgrade to the Eclipse 2025-03.

[matheuscomaru]

Muito obrigado. Atualizei o Eclipse para 2025-03 e funcionou corretamente. 🤝😁🙌