Moodle 2.6. In the Settings of an Assignment, I have set the Use marking workflow to Yes. In the View/grade all submissions page, I select some or all students and, at the bottom of the page, for With selected... I choose Set marking workflow state, Go / OK / Marking workflow state : Released.
When I click Save changes, my computer screen goes blank, I mean completely and indefinitely blank. When I return to the View/grade all submissions page, I see that the state is not updated for the selected students. The problem does not occur when I try in the Moodle.org Sandbox.
Please, can you help me with this problem?