If you post PDF files to your blackboard site using the “File” item type, read on for a must-do fix.
Students: if you try to view a PDF file and instead get a “Missing Plug-in” message, tell your professor he or she needs to fix the item.
File items in a content area display as a page icon and the name of the file as a hyperlink. If you use such File items, please go to the content area where they appear, and for each one use its contextual menu to edit it. Make sure that you set “Open in New Window: Yes” (default is “no”).
This change is important because recent versions of both Safari and Firefox for the Mac are unable to display PDF files when set to display in a subframe within the browser window.
The problem does not affect blackboard items where the PDF file appears as an ordinary attachment.
For more info see http://library.uoregon.edu/scis/blackboard/faq/instructors/i69.html Instructors can also contact CMET Consulting for assistance.