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Failed to signal transition from workflow task

Question asked by nparry on Jun 4, 2007
Latest reply on Jun 4, 2007 by nparry

I'm experimenting with a basic workflow, and when it transitions from the task node named "task" to the end-state, I get this error:
A system error happened during the operation: Failed to signal transition '' from workflow task 'jbpm$29'

My workflow is as follows:

Process Def:
<?xml version="1.0" encoding="UTF-8"?>

  xmlns=""  name="at:alfrescotestprocess">
   <swimlane name="initiator"></swimlane>
   <swimlane name="assignee">
     <assignment class="org.alfresco.repo.workflow.jbpm.AlfrescoAssignment">

   <start-state name="start">
      <task name="at:submitTask" swimlane="initiator"></task>
      <transition name="" to="task"></transition>
   <task-node name="task">
      <task name="at:doTask" swimlane="assignee"></task>
      <transition name="" to="end1"></transition>
   <end-state name="end1"></end-state>

Task Model:
<?xml version="1.0" encoding="UTF-8"?>
<model name="at:alfrescoTaskModel" xmlns="">

   <import uri="" prefix="d"/>
   <import uri="" prefix="bpm"/>
   <import uri="" prefix="cm"/>


   <namespace uri="" prefix="at"/>

   <type name="at:submitTask">

         <property name="at:notifyMe">

   <type name="at:doTask">


I know that it can't be that hard, because the workflow is really simple….