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java.lang.RuntimeException: 	at org.eclipse.jface.viewers.ColumnViewer.checkBusy(ColumnViewer.java:763)	at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:541)	at org.eclipse.ui.navigator.CommonViewer.refresh(CommonViewer.java:353)	at org.eclipse.ui.navigator.CommonViewer.refresh(CommonViewer.java:510)	at org.eclipse.ui.internal.navigator.resources.workbench.ResourceExtensionContentProvider$3.run(ResourceExtensionContentProvider.java:294)	at org.eclipse.ui.internal.navigator.resources.workbench.ResourceExtensionContentProvider.runUpdates(ResourceExtensionContentProvider.java:306)	at org.eclipse.ui.internal.navigator.resources.workbench.ResourceExtensionContentProvider.processDelta(ResourceExtensionContentProvider.java:116)	at org.eclipse.ui.model.WorkbenchContentProvider.resourceChanged(WorkbenchContentProvider.java:106)	at org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:291)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)	at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)	at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:327)	at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1181)	at org.eclipse.core.internal.resources.Project.setDescription(Project.java:1226)	at org.eclipse.core.internal.resources.Project.setDescription(Project.java:1238)	at org.eclipse.wst.common.project.facet.core.internal.FacetedProjectFrameworkImpl.create(FacetedProjectFrameworkImpl.java:721)	at org.eclipse.wst.common.project.facet.core.ProjectFacetsManager.create(ProjectFacetsManager.java:375)	at org.maven.ide.eclipse.wtp.internal.WebResourcesContentProvider.getPipelinedChildren(WebResourcesContentProvider.java:66)	at org.eclipse.ui.internal.navigator.extensions.SafeDelegateTreeContentProvider.getPipelinedChildren(SafeDelegateTreeContentProvider.java:178)	at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.pipelineChildren(NavigatorContentServiceContentProvider.java:204)	at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.access$1(NavigatorContentServiceContentProvider.java:190)	at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider$1.run(NavigatorContentServiceContentProvider.java:159)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.internalGetChildren(NavigatorContentServiceContentProvider.java:137)	at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.getChildren(NavigatorContentServiceContentProvider.java:123)	at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1348)	at org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:391)	at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:896)	at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:601)	at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:799)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)	at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:778)	at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:644)	at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:749)	at org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpand(AbstractTreeViewer.java:1444)	at org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeViewer.java:952)	at org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded(AbstractTreeViewer.java:1455)	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:132)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)	at org.eclipse.swt.widgets.Tree.wmNotifyChild(Tree.java:7408)	at org.eclipse.swt.widgets.Control.wmNotify(Control.java:5096)	at org.eclipse.swt.widgets.Composite.wmNotify(Composite.java:1887)	at org.eclipse.swt.widgets.Control.WM_NOTIFY(Control.java:4726)	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4215)	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4873)	at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)	at org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2362)	at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java:1536)	at org.eclipse.swt.widgets.Tree.WM_LBUTTONDOWN(Tree.java:6303)	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4195)	at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5844)	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4886)	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2459)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3655)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)	at org.eclipse.equinox.launcher.Main.run(Main.java:1407)	at org.eclipse.equinox.launcher.Main.main(Main.java:1383)