Unable to view Ticket Attachments after upgrade

I upgraded from RT 3.2.2 to RT 3.3.9. No errors or issues during the
upgrade process, but I am unable to view any ticket Attachments.

I have verified that the attachments are being stored in the database and
checked all permissions, but no joy.

Suggestions?

I upgraded from RT 3.2.2 to RT 3.3.9. No errors or issues during the
upgrade process, but I am unable to view any ticket Attachments.

Is that the only issue you see? Can you see what SQL queries RT is
logging?