Cannot get proper id on null object grails2.1.0 and activit 59

[Zincy Pen]

Hi,

I have downloaded vacation request sample. Logged in with kermit/kermit then clicked on start got the following error. What is missing here.

Cannot get property 'id' on null object

  Line | Method
->> 136 | doCall   in ActivitiGrailsPlugin$_addActivitiMethods_closure7_closure29
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   132 | doCall   in ActivitiGrailsPlugin$_addActivitiMethods_closure7
|    36 | doCall . in VacationRequestController.groovy
|   195 | doFilter in PageFragmentCachingFilter.java
|    63 | doFilter in AbstractFilter.java
|   886 | runTask  in java.util.concurrent.ThreadPoolExecutor$Worker
|   908 | run . .  in     ''
^   662 | run      in java.lang.Thread

Thanks,