java.lang.NullPointerException
        at org.netbeans.modules.web.core.JspEditorWarmUpTask.isWebProjectOpened(JspEditorWarmUpTask.java:342)
        at org.netbeans.modules.web.core.JspEditorWarmUpTask.run(JspEditorWarmUpTask.java:143)
        at org.netbeans.core.WarmUpSupport.run(WarmUpSupport.java:87)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1070)