How to reproduce the Vaadin with activiti


  Can anyone please help me on this?

I have downloaded [b]
[/b] and made it run. It’s working fine.
But i need to create my own activiti flow and application like login activiti. I have tried same as files structure in the above application but I am getting error like
getViewController() is null pointer exception. So can any one please help me to create simple activiti application in vaadin.