In a course that has been imported in Blackboard, the announcements are sometimes corrupt and as a result no new announcements can be added.
Try to delete the corrupted announcements, to resolve this problem.
When this is not possible the only solution is to bulk-delete all announcements.
(Please mind the fact that all current announcements will be deleted.)
- In the Control Panel on the left, choose Packages and Utilities >> Bulk Delete
- Then select Announcements under Other Material to Delete
- Type Delete under Confirmation and click on Submit.
Now you should be able to add new announcements.