Tree: illegal state exception moving expanded node -------------------------------------------------- Key: RF-6457 URL: https://jira.jboss.org/jira/browse/RF-6457 Project: RichFaces Issue Type: Bug Reporter: Nick Belaevski Assignee: Nick Belaevski I have a tree on the left and a tree on right , I can move a Parent node (With children) from Left to right but whenever I expand the node and move I get a java.lang.IllegalStateException: No tree element available or row key not set! when i looked at the trace i saw SEVERE: Servlet.service() for servlet Faces Servlet threw exception java.lang.IllegalStateException: No tree element available or row key not set! at org.richfaces.model.TreeDataModel.walk(TreeDataModel.java:176) at org.richfaces.model.TreeDataModel.walkModel(TreeDataModel.java:295) at org.richfaces.component.UITree.walkModel(UITree.java:426) at org.richfaces.component.state.TreeState.visitNodes(TreeState.java:211) at org.richfaces.component.state.TreeState.expandNode(TreeState.java:273) at org.richfaces.component.state.events.ExpandNodeCommandEvent.execute(ExpandNodeCommandEvent.java:48) at org.richfaces.component.state.events.TreeStateCommandEvent.processListener(TreeStateCommandEvent.java:59) at org.richfaces.component.UITree.broadcast(UITree.java:565) at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:317) at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:292) at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:249) at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:462) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)