I believe there is a typo bug in tag/manage.php calling an undefined function. See below the diff fixing this bug.


Index: tag/manage.php
===================================================================
RCS file: /cvsroot/moodle/moodle/tag/manage.php,v
retrieving revision 1.7.2.7
diff -c -r1.7.2.7 manage.php
*** tag/manage.php 2 Apr 2008 06:10:07 -0000 1.7.2.7
--- tag/manage.php 15 Jul 2008 21:18:12 -0000
***************
*** 117,123 ****
          foreach ( $new_otags as $new_otag ) {
              if ( $new_otag_id = tag_get_id($new_otag) ) {
                  // tag exists, change the type
! tag_set_type($new_otag_id, 'official');
              } else {
                  tag_add($new_otag, 'official');
              }
--- 117,123 ----
          foreach ( $new_otags as $new_otag ) {
              if ( $new_otag_id = tag_get_id($new_otag) ) {
                  // tag exists, change the type
! tag_type_set($new_otag_id, 'official');
              } else {
                  tag_add($new_otag, 'official');
              }