Description of problem:
When you deploy business central on EWS and you leave it configured with DefaultUserGroupInfoProducer, it is impossible to create a new task, irregardless of which user is logged in. When you click 'New task' > fill in task details > Create, you get:

Unexpected error encountered : org.jbpm.services.task.exception.CannotAddTaskException:There are no known Business Administrators, task cannot be created according to WS-HT specification

We suspect it might be because of typo in
jboss-ews-2.0/tomcat7/webapps/business-central/WEB-INF/classes/org/jbpm/services/task/identity/UserGroupsAssignmentsOne.mvel

in which there is (notice the missing 's'):
new Group( "Adminitrators" )

When the missing 's' is added, then we are able to create a task.

Version-Release number of selected component (if applicable):
BPMS 6.0.1 ER1