java.lang.NullPointerException
   at javax.swing.text.JTextComponent.getSelectionStart(JTextComponent.java:1770)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.performQuery(AsyncCompletionTask.java:171)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.refreshImpl(AsyncCompletionTask.java:202)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.refresh(AsyncCompletionTask.java:149)
   at org.netbeans.modules.editor.completion.CompletionImpl.refreshResultSets(CompletionImpl.java:1753)
   at org.netbeans.modules.editor.completion.CompletionImpl.access$2800(CompletionImpl.java:111)
   at org.netbeans.modules.editor.completion.CompletionImpl$Result.invokeRefresh(CompletionImpl.java:1945)
   at org.netbeans.modules.editor.completion.CompletionImpl.toolTipRefresh(CompletionImpl.java:1381)
   at org.netbeans.modules.editor.completion.CompletionImpl.caretUpdate(CompletionImpl.java:399)
   at javax.swing.text.JTextComponent.fireCaretUpdate(JTextComponent.java:397)
   at javax.swing.text.JTextComponent$MutableCaretEvent.fire(JTextComponent.java:4394)
   at javax.swing.text.JTextComponent$MutableCaretEvent.mouseReleased(JTextComponent.java:4450)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.Component.processMouseEvent(Component.java:6525)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
   at java.awt.Component.processEvent(Component.java:6290)
   at java.awt.Container.processEvent(Container.java:2234)
   at java.awt.Component.dispatchEventImpl(Component.java:4881)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4898)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4533)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4462)
   at java.awt.Container.dispatchEventImpl(Container.java:2278)
   at java.awt.Window.dispatchEventImpl(Window.java:2750)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:751)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:702)
   at java.awt.EventQueue$3.run(EventQueue.java:696)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:724)
   at java.awt.EventQueue$4.run(EventQueue.java:722)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:721)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)