NPE in rendering highlight in current dev build

[mkleint]

java.lang.NullPointerException
at javax.swing.text.JTextComponent.getCaretPosition(JTextComponent.java:1644)
at com.tropyx.nb_puppet.highlighter.MarkOccurrencesHighlighter$1.run(MarkOccurrencesHighlighter.java:82)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to
at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1484)
at com.tropyx.nb_puppet.highlighter.MarkOccurrencesHighlighter.setupAutoRefresh(MarkOccurrencesHighlighter.java:132)
at com.tropyx.nb_puppet.highlighter.MarkOccurrencesHighlighter.caretUpdate(MarkOccurrencesHighlighter.java:73)
at javax.swing.text.JTextComponent.fireCaretUpdate(JTextComponent.java:397)
at javax.swing.text.JTextComponent$MutableCaretEvent.fire(JTextComponent.java:4394)
at javax.swing.text.JTextComponent$MutableCaretEvent.stateChanged(JTextComponent.java:4416)
at org.netbeans.editor.BaseCaret$5.run(BaseCaret.java:961)
at org.netbeans.editor.Utilities.runInEventDispatchThread(Utilities.java:1042)
at org.netbeans.editor.BaseCaret.fireStateChanged(BaseCaret.java:972)
at org.netbeans.editor.BaseCaret.setDot(BaseCaret.java:1261)
at org.netbeans.editor.BaseCaret.setDot(BaseCaret.java:1282)
at org.netbeans.editor.BaseCaret.setDot(BaseCaret.java:1186)
at org.netbeans.lib.editor.hyperlink.HyperlinkOperation.performAction(HyperlinkOperation.java:271)
at org.netbeans.lib.editor.hyperlink.HyperlinkOperation.mouseClicked(HyperlinkOperation.java:446)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:269)
at java.awt.Component.processMouseEvent(Component.java:6528)
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(Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4542)
at java.awt.LightweightDispatcher.dispatchEvent(Container.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:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
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:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
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)
[catch] at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)