Below the queue there are 5 views: Payload, Header, toString, Hex and XML. I have to use XML most of the time, which works great in 1.12. However, in 1.13, it shows this error message:

org.xml.sax.SAXParseException: Content is not allowed in trailing section.
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at hermes.util.XmlUtils.prettyPrintXml(XmlUtils.java:76)
at hermes.util.XmlUtils.prettyPrintXml(XmlUtils.java:49)
at hermes.renderers.XMLMessageRenderer.render(XMLMessageRenderer.java:70)
at hermes.browser.components.MessagePayloadPanel.setMessage(MessagePayloadPanel.java:90)
at hermes.browser.actions.BrowserAction.valueChanged(BrowserAction.java:896)
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source)
at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source)
at javax.swing.DefaultListSelectionModel.setSelectionInterval(Unknown Source)
at hermes.browser.actions.BrowserAction$7.run(BrowserAction.java:801)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

It can't be anything with the XML file itself, because in 1.12 it still works fine.