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java.lang.NullPointerException at java.util.ArrayList.addAll(ArrayList.java:474) at org.jivesoftware.messenger.muc.spi.IQOwnerHandler.handleItemsElement(IQOwnerHandler.java:261) at org.jivesoftware.messenger.muc.spi.IQOwnerHandler.handleIQ(IQOwnerHandler.java:98) at org.jivesoftware.messenger.admin.muc_002droom_002daffiliations_jsp._jspService(muc_002droom_002daffiliations_jsp.java:141) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427) at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:822) at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:43) at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:813) at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:41) at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:813) at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:78) at org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:813) at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:494) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:569) at org.mortbay.http.HttpContext.handle(HttpContext.java:1482) at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:624) at org.mortbay.http.HttpContext.handle(HttpContext.java:1434) at org.mortbay.http.HttpServer.service(HttpServer.java:896) at org.mortbay.http.HttpConnection.service(HttpConnection.java:814) at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981) at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831) at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244) at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:366) at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)