Class cast exception when upgrading from 4.0.20 to 4.1.0 or 4.1.1 ----------------------------------------------------------------- Key: JGRP-2365 URL: https://issues.jboss.org/browse/JGRP-2365 Project: JGroups Issue Type: Bug Affects Versions: 4.1.0, 4.1.1 Reporter: Bernd Laengerich Assignee: Bela Ban Priority: Minor Fix For: 4.1.2 Attachments: fork-stacks.xml, tcp_fork.xml Updating from 4.0.20 to 4.1.1 I get "java.lang.ClassCastException: org.jgroups.protocols.CENTRAL_LOCK cannot be cast to org.jgroups.protocols.TP" when creating a JChannel using the same config as before. My config is [^tcp_fork.xml] attached to this issue. The stack trace: {noformat} java.lang.ClassCastException: org.jgroups.protocols.CENTRAL_LOCK cannot be cast to org.jgroups.protocols.TP at org.jgroups.stack.Configurator.createProtocolsAndInitializeAttrs(Configurator.java:110) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.protocols.FORK.createForkStacks(FORK.java:273) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.protocols.FORK.createForkStacks(FORK.java:265) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.protocols.FORK.init(FORK.java:100) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.stack.ProtocolStack.initProtocolStack(ProtocolStack.java:857) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.stack.ProtocolStack.setup(ProtocolStack.java:480) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.JChannel.init(JChannel.java:952) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.JChannel.<init>(JChannel.java:125) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at org.jgroups.JChannel.<init>(JChannel.java:107) ~[jgroups-4.1.1.Final.jar:4.1.1.Final] at com.acceptis.accept.jgroups.config.JGroupsConfigurator.setConfiguration(JGroupsConfigurator.java:86) [main/:?] at com.acceptis.framework.locking.impl.test.JGroupsLockManagerTest.setUp(JGroupsLockManagerTest.java:40) [test/:?] {noformat}