java.lang.NullPointerException
   at org.apache.maven.index.context.DefaultIndexingContext.acquireIndexSearcher(DefaultIndexingContext.java:488)
   at org.apache.maven.index.context.NexusIndexMultiReader.acquire(NexusIndexMultiReader.java:56)
   at org.apache.maven.index.context.NexusIndexMultiSearcher.<init>(NexusIndexMultiSearcher.java:32)
   at org.apache.maven.index.DefaultSearchEngine.searchIteratorPaged(DefaultSearchEngine.java:254)
   at org.apache.maven.index.DefaultSearchEngine.searchIteratorPaged(DefaultSearchEngine.java:235)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.repeatedPagedSearch(NexusRepositoryIndexerImpl.java:349)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.access$1500(NexusRepositoryIndexerImpl.java:112)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$12.run(NexusRepositoryIndexerImpl.java:806)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$7.run(NexusRepositoryIndexerImpl.java:716)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$7.run(NexusRepositoryIndexerImpl.java:702)
   at org.openide.util.Mutex.writeAccess(Mutex.java:399)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.iterate(NexusRepositoryIndexerImpl.java:702)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.getRecords(NexusRepositoryIndexerImpl.java:801)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.getRecords(NexusRepositoryIndexerImpl.java:794)
   at org.netbeans.modules.maven.indexer.api.RepositoryQueries.getRecordsResult(RepositoryQueries.java:277)
   at org.netbeans.modules.maven.repository.ui.BasicArtifactPanel$4.run(BasicArtifactPanel.java:574)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.maven.repository.ui.BasicArtifactPanel.componentOpened(BasicArtifactPanel.java:571)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:374)
   at org.netbeans.core.multiview.MultiViewPeer.peerComponentOpened(MultiViewPeer.java:315)
   at org.netbeans.core.multiview.MultiViewTopComponent.componentOpened(MultiViewTopComponent.java:151)
   at org.openide.windows.WindowManager.componentOpenNotify(WindowManager.java:307)
   at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentOpened(WindowManagerImpl.java:1138)
   at org.netbeans.core.windows.Central.addModeOpenedTopComponent(Central.java:798)
   at org.netbeans.core.windows.ModeImpl.addOpenedTopComponent(ModeImpl.java:354)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentOpenAtTabPosition(WindowManagerImpl.java:1250)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentOpen(WindowManagerImpl.java:1215)
   at org.openide.windows.TopComponent.open(TopComponent.java:497)
   at org.openide.windows.TopComponent.open(TopComponent.java:477)
   at org.netbeans.modules.maven.indexer.api.ui.ArtifactViewer.showArtifactViewer(ArtifactViewer.java:99)
   at org.netbeans.modules.maven.indexer.api.ui.ArtifactViewer.showArtifactViewer(ArtifactViewer.java:83)
   at org.netbeans.modules.maven.api.CommonArtifactActions$ShowArtifactAction.actionPerformed(CommonArtifactActions.java:120)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.menuDragMouseReleased(BasicMenuItemUI.java:913)
   at javax.swing.JMenuItem.fireMenuDragMouseReleased(JMenuItem.java:568)
   at javax.swing.JMenuItem.processMenuDragMouseEvent(JMenuItem.java:465)
   at javax.swing.JMenuItem.processMouseEvent(JMenuItem.java:411)
   at javax.swing.MenuSelectionManager.processMouseEvent(MenuSelectionManager.java:305)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:852)
   at java.awt.Component.processMouseEvent(Component.java:6290)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6055)
   at java.awt.Container.processEvent(Container.java:2039)
   at java.awt.Component.dispatchEventImpl(Component.java:4653)
   at java.awt.Container.dispatchEventImpl(Container.java:2097)
   at java.awt.Component.dispatchEvent(Component.java:4481)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4575)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4236)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4166)
   at java.awt.Container.dispatchEventImpl(Container.java:2083)
   at java.awt.Window.dispatchEventImpl(Window.java:2482)
   at java.awt.Component.dispatchEvent(Component.java:4481)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:648)
   at java.awt.EventQueue.access$000(EventQueue.java:84)
   at java.awt.EventQueue$1.run(EventQueue.java:607)
   at java.awt.EventQueue$1.run(EventQueue.java:605)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
   at java.awt.EventQueue$2.run(EventQueue.java:621)
   at java.awt.EventQueue$2.run(EventQueue.java:619)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:618)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)