I enabled the forum module, and when I add a comment on a forum post, there is no body field. I disabled both the Comment and the Forum modules, and re-installed them, but I still have the same problem.
If I manually create a body field (field_comment_body), I get the following error message:
Notice: Undefined property: stdClass::$comment_body in comment_admin_overview() (line 107 of /var/www/lms/modules/comment/comment.admin.inc).
Is there any solution to make the comment body appear as it happens with other content types?