Crashing at startup in Eclipse Neon

[karypid]

Hi,

I've just switched to Neon from Mars with a fresh install, but when I install and activate the themes I get an exception preventing startup. Steps to reproduce:

1. Install Neon
2. Start Neon with a new workspace
3. Open Window -> Preferences -> General -> Appearance
4. In "Theme" drop-down select Jeeeyul's themes and press OK
5. Restart Neon with this workspace

After (5) Eclipse fails to start referring me to the workspace's .metadata{timestamp}.log, where I see:

!ENTRY org.eclipse.equinox.event 4 0 2016-08-31 15:59:12.812 !MESSAGE Exception while dispatching event org.osgi.service.event.Event [topic=org/eclipse/e4/ui/css/swt/theme/ThemeManager/themeChanged] {themeEngine=org.eclipse.e4.ui.css.swt.internal.theme.ThemeEngine@33e6bd36, theme=Theme [id=net.jeeeyul.eclipse.themes.custom, label='Jeeeyul's themes - Custom Theme', osVersion=null], restore=true, device=org.eclipse.swt.widgets.Display@344561e0} to handler org.eclipse.e4.ui.services.internal.events.UIEventHandler@6e1d9b32 !STACK 0 java.lang.NoSuchMethodError: org.eclipse.e4.ui.css.swt.helpers.CSSSWTColorHelper.getRGB(Lorg/w3c/dom/css/CSSValue;)Lorg/eclipse/swt/graphics/RGB; at net.jeeeyul.eclipse.themes.css.internal.CSSCompabilityHelper.getGradient(CSSCompabilityHelper.java:75) at net.jeeeyul.eclipse.themes.css.JTabCSSPropertyHandler.applyCSSProperty(JTabCSSPropertyHandler.java:96) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyCSSProperty(AbstractCSSEngine.java:756) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyleDeclaration(AbstractCSSEngine.java:542) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:408) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:357) at org.eclipse.e4.ui.css.swt.engine.CSSSWTApplyStylesListener$1.handleEvent(CSSSWTApplyStylesListener.java:32) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4410) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4402) at org.eclipse.swt.widgets.Display.runSkin(Display.java:4311) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1381) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1368) at org.eclipse.swt.widgets.Composite.layout(Composite.java:725) at net.jeeeyul.eclipse.themes.css.SashWidthHandler.applyCSSProperty(SashWidthHandler.java:47) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyCSSProperty(AbstractCSSEngine.java:756) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyleDeclaration(AbstractCSSEngine.java:542) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:416) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:357) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:433) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:357) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:433) at org.eclipse.e4.ui.css.core.impl.engine.AbstractCSSEngine.applyStyles(AbstractCSSEngine.java:357) at org.eclipse.e4.ui.css.swt.engine.CSSSWTEngineImpl.reapply(CSSSWTEngineImpl.java:78) at net.jeeeyul.eclipse.themes.css.RewriteCustomTheme.rewrite(RewriteCustomTheme.java:72) at net.jeeeyul.eclipse.themes.internal.ActiveThemeTracker.onCustomThemeActivativation(ActiveThemeTracker.java:80) at net.jeeeyul.eclipse.themes.internal.ActiveThemeTracker.handleThemeChange(ActiveThemeTracker.java:53) at net.jeeeyul.eclipse.themes.internal.ActiveThemeTracker.access$0(ActiveThemeTracker.java:45) at net.jeeeyul.eclipse.themes.internal.ActiveThemeTracker$1.handleEvent(ActiveThemeTracker.java:30) at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4813) at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:211) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:201) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.css.swt.internal.theme.ThemeEngine.sendThemeChangeEvent(ThemeEngine.java:487) at org.eclipse.e4.ui.css.swt.internal.theme.ThemeEngine.setTheme(ThemeEngine.java:466) at org.eclipse.e4.ui.css.swt.internal.theme.ThemeEngine.setTheme(ThemeEngine.java:389) at org.eclipse.ui.internal.dialogs.ViewsPreferencePage.performOk(ViewsPreferencePage.java:290) at org.eclipse.jface.preference.PreferenceDialog$8.run(PreferenceDialog.java:905) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173) at org.eclipse.jface.preference.PreferenceDialog.okPressed(PreferenceDialog.java:889) at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.okPressed(FilteredPreferenceDialog.java:409) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.okPressed(WorkbenchPreferenceDialog.java:168) at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(PreferenceDialog.java:230) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:618) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4410) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4228) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3816) at org.eclipse.jface.window.Window.runEventLoop(Window.java:818) at org.eclipse.jface.window.Window.open(Window.java:794) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:211) at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:63) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565) at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397) at org.eclipse.jface.action.ActionContributionItem$$Lambda$70/963205123.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4410) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4228) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3816) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) 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:497) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519)

I'm guessing some API change in Neon?

NOTE: I am behind a firewall so I used alternative install via "jeeeyul.github.io-themes-v2.1.7.zip" (local update site).

[KernelPanic92]

Same problems!

[karypid]

I've just tried the same on my Mac and it seems to work fine. Will try again on Windows tomorrow.

[dahtdaniel]

need to install "Eclipse Xtend" plugin

[smtl]

Same thing happened to me. Same setup (local install) and same steps as original post. Same error.