I have a simple example usage of the ProcessState node, where a parent process contains a reference to a child process via a ProcessState node. The process definitions are stored in a relational database. The child process actually executes successfully (I have a single node with an ActionHandler that prints the node name to System.out). However, I receive a NullPointerException in the ProcessState.leave() method - the executionContext.getSubProcessInstance() method call (first line in the method) returns null, and the next line then attempts to invoke a method on this null reference. I see from the debugger that the executionContext object in the ProcessState.execute() method is different from the executionObject I later see in the ProcessState.leave() method - though in both methods the subProcessInstance member of the executionContext object is null. Here are my two process definitions: <process-definition xmlns="" name="parent"> <start-state name="start"> </start-state> <end-state name="end1"></end-state> <process-state name="process1"> <sub-process name="child"/> </process-state> </process-definition> <process-definition xmlns="" name="child"> <start-state name="start"> </start-state> <end-state name="end1"></end-state> <action name="action" config-type="bean" class="SysoutActionHandler"> </process-definition> Any ideas? Given my limited analysis of the ProcessState.java code and related classes, I do not see how this can actually work - am I seeing a bug? Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3962201#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...