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This is very similar to Bug 479425, but that bug was about *copy* and paste. Copy does seem to work now, but not "cut". Steps to reproduce ================== 1. create a UML-RT model 2. Add a Top Capsule and a Package. Inside the package add a capsule and a protocol. 3. In the model explorer, select the protocol, right-click, select "Cut" (it disappears) 4. Select the root element, right-click, select "Paste" Expected result =============== The protocol should now be at the top-level, directly contained by the root element Actual result ============= Nothing happens. The following error appears in the Error log: eclipse.buildId=unknown java.version=1.8.0_101 java.vendor=Oracle Corporation BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_CA Framework arguments: -keyring /Users/epp/.eclipse_keyring Command-line arguments: -os macosx -ws cocoa -arch x86_64 -keyring /Users/epp/.eclipse_keyring org.eclipse.ui Error Fri Dec 01 12:50:43 EST 2017 Unhandled event loop exception org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:65) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:305) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:239) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:487) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:431) at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.handleWidgetSelection(AbstractContributionItem.java:446) at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.lambda$2(AbstractContributionItem.java:472) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4257) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1502) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1525) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1510) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1314) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4081) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3698) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590) at org.eclipse.equinox.launcher.Main.run(Main.java:1499) Caused by: java.lang.NullPointerException at org.eclipse.papyrus.uml.diagram.common.strategy.paste.StereotypePasteStrategy.getSemanticCommand(StereotypePasteStrategy.java:137) at org.eclipse.papyrus.views.modelexplorer.handler.PasteHandler.getCommand(PasteHandler.java:51) at org.eclipse.papyrus.infra.ui.command.AbstractCommandHandler.getCommand(AbstractCommandHandler.java:70) at org.eclipse.papyrus.infra.ui.command.AbstractCommandHandler.execute(AbstractCommandHandler.java:154) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:291) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:92) at sun.reflect.GeneratedMethodAccessor82.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55) ... 39 more Diagnostics =========== Given that this is caused by an NPE: Caused by: java.lang.NullPointerException at org.eclipse.papyrus.uml.diagram.common.strategy.paste.StereotypePasteStrategy.getSemanticCommand(StereotypePasteStrategy.java:137) at [...] it looks like the problem may be in base Papyrus. But maybe Papyrus-RT should have a stereotype paste strategy of its own.
