I have a course that I backed up in Moodle 1.9.19. I restored the coruse in Moodle 2.3. All content came over fine, but the grade book page will not display. I can see the tabs at the top of the page, but the rest of the grader report is blank. I can click on the different tabs: My preferences, Settings, Scales, Import, Export and Letters. However, when I click the Categories and items tab, a blank page is displayed. Any ideas on why the grader report and the Categories and items pages will not display?
Thanks for any and all help!