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The following error was reported via the automated error reporting: code: 0 plugin: org.eclipse.ui_3.107.0.v20140911-1616 message: Unhandled event loop exception fingerprint: 25db01d2 exception class: org.eclipse.swt.SWTException exception message: Failed to execute runnable (org.eclipse.core.runtime.AssertionFailedException: assertion failed: ) number of children: 0 org.eclipse.swt.SWTException: Failed to execute runnable (org.eclipse.core.runtime.AssertionFailedException: assertion failed: ) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:139) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:637) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:580) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:141) 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:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(null:-2) at sun.reflect.NativeMethodAccessorImpl.invoke(null:-1) at sun.reflect.DelegatingMethodAccessorImpl.invoke(null:-1) at java.lang.reflect.Method.invoke(null:-1) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) caused by: org.eclipse.core.runtime.AssertionFailedException: assertion failed: at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110) at org.eclipse.core.runtime.Assert.isTrue(Assert.java:96) at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:1100) at org.eclipse.emf.ecore.presentation.EcoreEditor.access$1(EcoreEditor.java:1) at org.eclipse.emf.ecore.presentation.EcoreEditor$10.run(EcoreEditor.java:1355) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:637) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:580) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:141) 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:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(null:-2) at sun.reflect.NativeMethodAccessorImpl.invoke(null:-1) at sun.reflect.DelegatingMethodAccessorImpl.invoke(null:-1) at java.lang.reflect.Method.invoke(null:-1) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) General Information: reported-by: t invariant emptyName: self.name <> '';top anonymous-id: 9ba5589a-eebe-4694-b776-c5b7e5a1e72d eclipse-build-id: 4.5.0.I20140918-0330 eclipse-product: org.eclipse.epp.package.modeling.product operating system: Windows7 6.1.0 (x86_64) - win32 jre-version: 1.8.0_25-b18 The following plug-ins were present on the execution stack (*): 1. org.eclipse.core.databinding.observable_1.4.1.v20140910-2107 2. org.eclipse.core.databinding_1.4.100.v20140910-2107 3. org.eclipse.core.runtime_3.10.0.v20140724-1132 4. org.eclipse.e4.ui.workbench_1.2.0.v20140905-1352 5. org.eclipse.e4.ui.workbench.swt_0.12.100.v20140908-1525 6. org.eclipse.emf.ecore_2.11.0.v20141027-0406 7. org.eclipse.emf_2.6.0.v20141110-0530 8. org.eclipse.equinox.app_1.3.200.v20130910-1609 9. org.eclipse.equinox.launcher_1.3.0.v20140415-2008 10. org.eclipse.swt_3.104.0.v20140916-1012 11. org.eclipse.ui_3.107.0.v20140911-1616 12. org.eclipse.ui.ide.application_1.0.600.v20140909-1818 13. org.eclipse.ui.ide_3.10.100.v20140905-0917 Please note that: * Messages, stacktraces, and nested status objects may be shortened. * Bug fields like status, resolution, and whiteboard are sent back to reporters. * The list of present bundles and their respective versions was calculated by package naming heuristics. This may or may not reflect reality. Please visit http://goo.gl/MWFSff for further details. Thank you for your assistance. Your friendly error-reports-inbox.
I've looked up the (to date) top-3 most similar bug groups and listed the closest bug of each group below. This report may or may not be duplicate of those (low or similar scores for all entries may indicate that this hasn't been reported yet): > 1. Bug 450621: [m2e] Resource '/com.codetrails.connect.args.der.rcp.feature/pom.xml' does not exist. – 0.7 > 2. Bug 450626: [wtp,m2e] can not calculate a model ID without a document reference – 0.7 > 3. Bug 450622: [m2e] – 0.7 If this report actually is a duplicate of those, please mark it as such. This information helps me to improve the recommendations further for the next issue. Thank you for your assistance. Your friendly error-reports-inbox.
Moving to platform.ui for review.
The issue is caused by a wrong result during assert in MultiPageEditorPart.setActivePage(int pageIndex) Assert.isTrue(pageIndex >= 0 && pageIndex < getPageCount()); the setActivePage() gets the max number of pages with getPageCount(), but in the method we read the CTabFolder with the pages "May not have been created yet, or may have been disposed." Hence, the bug is most likely caused by the CTabFolder not yet created or already disposed. Note: the mentioned bug ids are non valid: 450621, 450622 and 450626.
