Open Source Document Management System | OpenKM

Hi,

I am trying to execute workflow in OpenKM 6.2 on windows(with tomcat).
Deployed the process successfully using Jboss Developer Studio.
My form has to pass between two users. I am able to get the form for the first user but it's not going to the second and it's giving the following exception.

Please, share the stack trace error ( you can capture from catalina.log file )