ERROR MESSAGE

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More Details
Error 500
url=http://n2.nabble.com/catalog/WhoCanViewAndPost.jtp?action=save&option=NONE&app=4073685  user-agent=Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618; OfficeLiveConnector.1.4; OfficeLivePatch.0.0; NET_mmhpset) referer=http://n2.nabble.com/catalog/WhoCanViewAndPost.jtp?app=4073685
RequestURI=/catalog/WhoCanViewAndPost.jtp

Caused by:
fschmidt.util.servlet.JtpContextServlet$JtpRuntimeException: url=http://n2.nabble.com/catalog/WhoCanViewAndPost.jtp?action=save&option=NONE&app=4073685  user-agent=Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618; OfficeLiveConnector.1.4; OfficeLivePatch.0.0; NET_mmhpset) referer=http://n2.nabble.com/catalog/WhoCanViewAndPost.jtp?app=4073685
        at fschmidt.util.servlet.JtpContextServlet.handleException(JtpContextServlet.java:620)
        at fschmidt.util.servlet.JtpContextServlet.service2(JtpContextServlet.java:514)
        at fschmidt.util.servlet.JtpContextServlet.service(JtpContextServlet.java:316)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
        at fschmidt.util.servlet.GzipFilter.doFilter(GzipFilter.java:137)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)
        at cachingfilter.CachingFilter.doFilter(CachingFilter.java:120)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)
        at fschmidt.util.servlet.BadBotFilter.doFilter(BadBotFilter.java:74)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:387)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
        at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:879)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
        at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)
Caused by: java.lang.IllegalStateException: current agent already set to user-307533
        at nabble.model.Agent$Current.begin(Agent.java:46)
        at nabble.view.web.catalog.WhoCanViewAndPost.service(WhoCanViewAndPost.java:67)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at fschmidt.util.servlet.JtpContextServlet.service2(JtpContextServlet.java:512)
        ... 25 more

Caused by:
java.lang.IllegalStateException: current agent already set to user-307533
        at nabble.model.Agent$Current.begin(Agent.java:46)
        at nabble.view.web.catalog.WhoCanViewAndPost.service(WhoCanViewAndPost.java:67)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at fschmidt.util.servlet.JtpContextServlet.service2(JtpContextServlet.java:512)
        at fschmidt.util.servlet.JtpContextServlet.service(JtpContextServlet.java:316)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
        at fschmidt.util.servlet.GzipFilter.doFilter(GzipFilter.java:137)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)
        at cachingfilter.CachingFilter.doFilter(CachingFilter.java:120)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)
        at fschmidt.util.servlet.BadBotFilter.doFilter(BadBotFilter.java:74)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:387)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
        at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:879)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
        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:520)

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