java.lang.NullPointerException when creating public jsp

I want share the solution of this problem I had today. It took me 5 hours of living hell to figure solve it. When create a public .jsp page, there are TWO things you need to do.

1) in your plugin, you need the following:

private static final String URL = "userservice/sign-in.jsp"; // replace with your plugin/your.jsp

In init() function I have to add:
AuthCheckFilter.addExclude(URL);

And in destroy():

AuthCheckFilter.removeExclude(URL);

2) In the .jsp page, you need the following:

<code>
<meta content="none" name="decorator" />
</code>

If you don't have this meta tag in your jsp, you will get the following error:

Exception:

java.lang.NullPointerException
    at org.jivesoftware.openfire.admin.decorators.main_jsp._jspService(main_jsp.java:1 95)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at org.mortbay.jetty.servlet.Dispatcher.include(Dispatcher.java:192)
    at com.opensymphony.module.sitemesh.filter.PageFilter.applyDecorator(PageFilter.ja va:156)
    at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:59)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
    at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:66)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
    at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:42)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
    at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:70)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
    at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:146)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollect ion.java:206)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:324)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.j ava:829)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

I just need to share this with you since it caused me so many problems...

Nick