Can't Delete Topics Or Sub-Forums

[RichardEnoch]

I always seem to get this Error
Error 500
url=http://forward-together-missional-group.967100.n3.nabble.com/catalog/PrivateForum.jtp?forum=1529461  method=GET user-agent=Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.18.1 (KHTML, like Gecko) Version/5.0.2 Safari/533.18.5 referer=http://forward-together-missional-group.967100.n3.nabble.com/Group-3-f1529461.html remote=108.18.122.155
RequestURI=/catalog/PrivateForum.jtp

Caused by:
fschmidt.util.servlet.JtpContextServlet$JtpRuntimeException: url=http://forward-together-missional-group.967100.n3.nabble.com/catalog/PrivateForum.jtp?forum=1529461  method=GET user-agent=Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.18.1 (KHTML, like Gecko) Version/5.0.2 Safari/533.18.5 referer=http://forward-together-missional-group.967100.n3.nabble.com/Group-3-f1529461.html remote=108.18.122.155
        at fschmidt.util.servlet.JtpContextServlet.handleException(JtpContextServlet.java:629)
        at fschmidt.util.servlet.JtpContextServlet.service2(JtpContextServlet.java:530)
        at fschmidt.util.servlet.JtpContextServlet.service(JtpContextServlet.java:331)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
        at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
        at fschmidt.util.servlet.GzipFilter.doFilter(GzipFilter.java:137)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at cachingfilter.CachingFilter.doFilter(CachingFilter.java:133)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at fschmidt.util.servlet.BadBotFilter.doFilter(BadBotFilter.java:74)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
        at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
        at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.ClassCastException: nabble.model.Anonymous
        at nabble.view.web.catalog.PrivateForum.service(PrivateForum.java:30)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at fschmidt.util.servlet.JtpContextServlet.service2(JtpContextServlet.java:528)
        ... 25 more