This known issue is closed due to the decommissioning of Blackboard on the 31st of August, 2021
Bb Grader is an app that allows Instructors to add annotation to Blackboard Assignment student submissions on an iPad. Following the transition from Crocodoc to New Box View, Instructors may receive an error when accessing student submissions for the first time following the transition (see image below).
No fix available
To view the document in Bb Grader, close and then reopen the Bb Grader app on your iPad device. To do this, simply double tap the home button to open the multi-tasking view on your iPad device and swipe up on the Bb Grader app preview to force close it. Reopen Bb Grader and then open the submission.