Hello,

I'm a beginner with jBpm 4 RC 1 and have been having a lot of troublesgetting 
timers defined in my jpdl files to trigger at all. All of the examples I've 
tried from the net have not worked. 

Below I'm including a simple jpdl file I am using for test as well as the 
exception I receive when creating a process instance:


  | 
  | <?xml version="1.0" encoding="UTF-8"?>
  | 
  | <process name="delayprocessing2" xmlns="http://jbpm.org/4.0/jpdl";>
  |    <start g="272,38,80,40">
  |       <transition to="UpdateStatus"/>
  |    </start>
  |    
  |    <task name="UpdateStatus">
  |       <on event="timeout">
  |         <timer duedate="10 seconds" repeat="10 seconds">
  |         </timer>
  |         <event-listener class="sample.DelayedAssetCheckListener"/>
  |       </on>
  |       <transition to="found"/>
  |    </task>
  |    <end g="272,432,48,48" name="lost"/>
  |    <end g="457,338,48,48" name="found"/>
  | </process>
  | 

and here's the error:


  | Exception in thread "main" org.jbpm.api.JbpmException: unsuppported 
extension org.jbpm.jpdl.internal.model.JpdlExecution
  |     at 
org.jbpm.pvm.internal.model.ExecutionImpl.getExtension(ExecutionImpl.java:1021)
  |     at 
org.jbpm.jpdl.internal.activity.TaskActivity.execute(TaskActivity.java:48)
  |     at 
org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(ExecuteActivity.java:57)
  |     at 
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:589)
  |     at 
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:562)
  |     at 
org.jbpm.pvm.internal.model.op.ProceedToDestination.perform(ProceedToDestination.java:56)
  |     at 
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:589)
  |     at 
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:562)
  |     at 
org.jbpm.pvm.internal.model.ExecutionImpl.start(ExecutionImpl.java:201)
  |     at 
org.jbpm.pvm.internal.cmd.StartProcessInstanceInLatestCmd.execute(StartProcessInstanceInLatestCmd.java:63)
  |     at 
org.jbpm.pvm.internal.cmd.StartProcessInstanceInLatestCmd.execute(StartProcessInstanceInLatestCmd.java:39)
  |     at 
org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
  |     at 
org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)
  |     at 
org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:54)
  |     at 
org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)
  |     at 
org.jbpm.pvm.internal.svc.ExecutionServiceImpl.startProcessInstanceByKey(ExecutionServiceImpl.java:68)
  |     at jbpmsample.Driver.main(Driver.java:41)
  | 
I would really appreciate a knowledgeable person's help with this.


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