As rootAdmin, create a collection, go to page to "Assign License" to the collection. Don't select any licenses, then click "Assign License" button.
Internal Server Error.

Caused by: java.lang.NullPointerException
        at sgf.gateway.dao.metadata.impl.hibernate.CatalogDAOImpl.getLicense(CatalogDAOImpl.java:335)
        at sgf.gateway.service.metadata.impl.spring.CatalogServiceImpl.getLicense(CatalogServiceImpl.java:260)
        at sgf.gateway.web.controllers.browse.AssignLicenseController.onSubmit(AssignLicenseController.java:97)
        at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272)
        at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268)
        at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
        at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
        ... 65 more