Image

Your PDF file has either been corrupted by using Adobe Acrobat Pro/DC rather than Reader, or it has security settings enabled in the file itself. To determine if there are security settings enabled:
- Open the file
- From the menu bar at the top of the Adobe application’s window, click File -> Properties
- Click on the Security tab of the pop-up window
Image

If you have difficulty alleviating the issue(s), please email ra-help@mit.edu.