When I try start Activiti Explorer with demo data, all users list are empty. For example, i can´t add users (Gonzo, kermit,..) in my groups because when I try add one user my user list is empty.
This works not intuitive. You have to type 2 characters in the box before the list is populated. It is also case sensitive. So try typing "Fo" in the field above the list and "Fozzie Bear" should appear.