Customer had the subscription plugin installed. When users tried to login in, the subscription plugin threw an exception, preventing the user from logging in. Here is the stack trace:
2007.02.07 16:12:22 [org.jivesoftware.wildfire.nio.ConnectionHandler.exceptionCaught(ConnectionHandler.java:104)]
java.lang.AbstractMethodError
at org.jivesoftware.wildfire.interceptor.InterceptorManager.invokeInterceptors(InterceptorManager.java:227)
at org.jivesoftware.wildfire.IQRouter.route(IQRouter.java:84)
at org.jivesoftware.wildfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:67)
at org.jivesoftware.wildfire.net.StanzaHandler.processIQ(StanzaHandler.java:283)
at org.jivesoftware.wildfire.net.ClientStanzaHandler.processIQ(ClientStanzaHandler.java:79)
at org.jivesoftware.wildfire.net.StanzaHandler.process(StanzaHandler.java:248)
at org.jivesoftware.wildfire.net.StanzaHandler.process(StanzaHandler.java:147)
at org.jivesoftware.wildfire.nio.ConnectionHandler.messageReceived(ConnectionHandler.java:126)
at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:703)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilterChain.java:54)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
at org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput.flush(SimpleProtocolDecoderOutput.java:62)
at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:186)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilterChain.java:54)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:250)
at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:305)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)