java.lang.NullPointerException
   at org.netbeans.modules.web.core.jsploader.TagLibParseSupport$ParsingRunnable.run(TagLibParseSupport.java:371)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2044)