The single forum doesn't work in V1.2

The single forum doesn't work in V1.2

by Giovanni Farias, EdD (Moodle Partner) -
Number of replies: 0

When I insert a forum (type: A single simple discussion), aparently everythink works fine. When I try to use the forum to post something, the mesage below is presented:

Fatal error: Call to undefined function: forum_set_display_mode() in /home/gfarias/public_html/lms/mod/forum/view.php on line 175

The version is 1.2

Does any body can help me?

Average of ratings: -