It's not possible to enable Attachments without enabling Body in DLP roles
(System -> Login management-> Roles -> Create new/edit role -> General -> User Privileges -> Incidents -> Display Attributes ):
after enabling Attachments console automatically checks the box for Body:
DLP versions from 15.1 to 15.5.
Issue has been resolved in DLP 15.7 - please upgrade to fix this issue. Due to nature of this issue, no maintenance packs or hot fixes for versions 15.1 or 15.5 can cover this.