eclipse css editor does not work -


every time try open css-sheet eclipse's css-editor, exception

java.lang.nullpointerexception     @ org.eclipse.wb.internal.css.editors.multi.sourcepage.updatesourceactions(sourcepage.java:129)     @ org.eclipse.wb.internal.css.editors.multi.sourcepage.handleactivestate(sourcepage.java:63)     @ org.eclipse.wb.internal.css.editors.multi.defaultmultimode.showpage(defaultmultimode.java:92)     @ org.eclipse.wb.internal.css.editors.multi.multipagesmode.showsource(multipagesmode.java:49)     @ org.eclipse.wb.internal.css.editors.multi.multipagesmode.create(multipagesmode.java:87)     @ org.eclipse.wb.internal.css.editors.multi.multipageeditor.createpartcontrol(multipageeditor.java:46)     @ org.eclipse.ui.internal.e4.compatibility.compatibilitypart.createpartcontrol(compatibilitypart.java:140)     @ org.eclipse.ui.internal.e4.compatibility.compatibilityeditor.createpartcontrol(compatibilityeditor.java:99)     @ org.eclipse.ui.internal.e4.compatibility.compatibilitypart.create(compatibilitypart.java:321)     @ sun.reflect.generatedmethodaccessor76.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ org.eclipse.e4.core.internal.di.methodrequestor.execute(methodrequestor.java:55)     @ org.eclipse.e4.core.internal.di.injectorimpl.processannotated(injectorimpl.java:888)     @ org.eclipse.e4.core.internal.di.injectorimpl.processannotated(injectorimpl.java:869)     @ org.eclipse.e4.core.internal.di.injectorimpl.inject(injectorimpl.java:120)     @ org.eclipse.e4.core.internal.di.injectorimpl.internalmake(injectorimpl.java:337)     @ org.eclipse.e4.core.internal.di.injectorimpl.make(injectorimpl.java:258)     @ org.eclipse.e4.core.contexts.contextinjectionfactory.make(contextinjectionfactory.java:162)     @ org.eclipse.e4.ui.internal.workbench.reflectioncontributionfactory.createfrombundle(reflectioncontributionfactory.java:104)     @ org.eclipse.e4.ui.internal.workbench.reflectioncontributionfactory.docreate(reflectioncontributionfactory.java:73)     @ org.eclipse.e4.ui.internal.workbench.reflectioncontributionfactory.create(reflectioncontributionfactory.java:55)     @ org.eclipse.e4.ui.workbench.renderers.swt.contributedpartrenderer.createwidget(contributedpartrenderer.java:127)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.createwidget(partrenderingengine.java:983)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.safecreategui(partrenderingengine.java:662)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.safecreategui(partrenderingengine.java:766)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.access$2(partrenderingengine.java:737)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine$7.run(partrenderingengine.java:731)     @ org.eclipse.core.runtime.saferunner.run(saferunner.java:42)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.creategui(partrenderingengine.java:715)     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl$1.handleevent(partserviceimpl.java:92)     @ org.eclipse.e4.ui.services.internal.events.uieventhandler$1.run(uieventhandler.java:40)     @ org.eclipse.swt.widgets.synchronizer.syncexec(synchronizer.java:187)     @ org.eclipse.ui.internal.uisynchronizer.syncexec(uisynchronizer.java:156)     @ org.eclipse.swt.widgets.display.syncexec(display.java:4734)     @ org.eclipse.e4.ui.internal.workbench.swt.e4application$1.syncexec(e4application.java:218)     @ org.eclipse.e4.ui.services.internal.events.uieventhandler.handleevent(uieventhandler.java:36)     @ org.eclipse.equinox.internal.event.eventhandlerwrapper.handleevent(eventhandlerwrapper.java:197)     @ org.eclipse.equinox.internal.event.eventhandlertracker.dispatchevent(eventhandlertracker.java:197)     @ org.eclipse.equinox.internal.event.eventhandlertracker.dispatchevent(eventhandlertracker.java:1)     @ org.eclipse.osgi.framework.eventmgr.eventmanager.dispatchevent(eventmanager.java:230)     @ org.eclipse.osgi.framework.eventmgr.listenerqueue.dispatcheventsynchronous(listenerqueue.java:148)     @ org.eclipse.equinox.internal.event.eventadminimpl.dispatchevent(eventadminimpl.java:135)     @ org.eclipse.equinox.internal.event.eventadminimpl.sendevent(eventadminimpl.java:78)     @ org.eclipse.equinox.internal.event.eventcomponent.sendevent(eventcomponent.java:39)     @ org.eclipse.e4.ui.services.internal.events.eventbroker.send(eventbroker.java:81)     @ org.eclipse.e4.ui.internal.workbench.uieventpublisher.notifychanged(uieventpublisher.java:59)     @ org.eclipse.emf.common.notify.impl.basicnotifierimpl.enotify(basicnotifierimpl.java:374)     @ org.eclipse.e4.ui.model.application.ui.impl.elementcontainerimpl.setselectedelement(elementcontainerimpl.java:171)     @ org.eclipse.e4.ui.internal.workbench.modelserviceimpl.showelementinwindow(modelserviceimpl.java:488)     @ org.eclipse.e4.ui.internal.workbench.modelserviceimpl.bringtotop(modelserviceimpl.java:454)     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl.delegatebringtotop(partserviceimpl.java:692)     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl.bringtotop(partserviceimpl.java:385)     @ org.eclipse.e4.ui.internal.workbench.partserviceimpl.showpart(partserviceimpl.java:1126)     @ org.eclipse.ui.internal.workbenchpage.busyopeneditor(workbenchpage.java:3182)     @ org.eclipse.ui.internal.workbenchpage.access$23(workbenchpage.java:3104)     @ org.eclipse.ui.internal.workbenchpage$9.run(workbenchpage.java:3086)     @ org.eclipse.swt.custom.busyindicator.showwhile(busyindicator.java:70)     @ org.eclipse.ui.internal.workbenchpage.openeditor(workbenchpage.java:3081)     @ org.eclipse.ui.internal.workbenchpage.openeditor(workbenchpage.java:3045)     @ org.eclipse.ui.actions.openwithmenu.openeditor(openwithmenu.java:338)     @ org.eclipse.ui.actions.openwithmenu$2.handleevent(openwithmenu.java:180)     @ org.eclipse.swt.widgets.eventtable.sendevent(eventtable.java:84)     @ org.eclipse.swt.widgets.display.sendevent(display.java:4353)     @ org.eclipse.swt.widgets.widget.sendevent(widget.java:1061)     @ org.eclipse.swt.widgets.display.rundeferredevents(display.java:4172)     @ org.eclipse.swt.widgets.display.readanddispatch(display.java:3761)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine$9.run(partrenderingengine.java:1151)     @ org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)     @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.run(partrenderingengine.java:1032)     @ org.eclipse.e4.ui.internal.workbench.e4workbench.createandrunui(e4workbench.java:148)     @ org.eclipse.ui.internal.workbench$5.run(workbench.java:636)     @ org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)     @ org.eclipse.ui.internal.workbench.createandrunworkbench(workbench.java:579)     @ org.eclipse.ui.platformui.createandrunworkbench(platformui.java:150)     @ org.eclipse.ui.internal.ide.application.ideapplication.start(ideapplication.java:135)     @ org.eclipse.equinox.internal.app.eclipseapphandle.run(eclipseapphandle.java:196)     @ org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.runapplication(eclipseapplauncher.java:134)     @ org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.start(eclipseapplauncher.java:104)     @ org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:382)     @ org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:236)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ org.eclipse.equinox.launcher.main.invokeframework(main.java:648)     @ org.eclipse.equinox.launcher.main.basicrun(main.java:603)     @ org.eclipse.equinox.launcher.main.run(main.java:1465)

the thing eclipse tells me "failed create part's controls". can tell me what's going on? since function of eclipse never worked before, find annoying edit css in texteditor...


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