This is also a problem for me when connecting from the .NET Openwire API:
Exception in thread "ActiveMQ Transport: tcp:///172.16.11.229:2497"
java.lang.IllegalArgumentException: Invalid version: 2, could not load
org.apache.activemq.openwire.v2.MarshallerFactory
at
org.apache.activemq.openwire.OpenWireFormat.setVersion(OpenWireFormat.java:329)
at
org.apache.activemq.openwire.OpenWireFormat.renegociatWireFormat(OpenWireFormat.java:569)
at
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:100)
at
org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:122)
at
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:87)
at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:143)
at java.lang.Thread.run(Thread.java:613)
Caused by: java.lang.ClassNotFoundException:
org.apache.activemq.openwire.v2.MarshallerFactory
at
org.apache.activemq.util.ClassLoading.loadClass(ClassLoading.java:104)
at
org.apache.activemq.openwire.OpenWireFormat.setVersion(OpenWireFormat.java:327)
... 6 more
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