PHP Fatal error: Call to undefined method CI_DB_mysql_result::\xb0\xd7\xcd\x19\xf6*() in xxxxxx.php

[eluser]鰯[/eluser]
I need a help!! I don't know what happened.

Code:

[Tue Aug 31 04:12:02 2010] [error] PHP Fatal error:  Call to undefined method CI_DB_mysql_result::`3\xcc\x19\xf6*() in xxxxxxxxx.php on line 62
[Tue Aug 31 04:12:02 2010] [error] PHP Fatal error:  Call to undefined method CI_DB_mysql_result::`3\xcc\x19\xf6*() in xxxxxxxxx.php on line 62
[Tue Aug 31 04:12:02 2010] [error] PHP Fatal error:  Call to undefined method CI_DB_mysql_result::x\xc9\xcd\x19\xf6*() in xxxxxxxxx.php on line 62
[Tue Aug 31 04:12:02 2010] [error] PHP Fatal error:  Call to undefined method CI_DB_mysql_result::\xb0\xd7\xcd\x19\xf6*() in xxxxxxxxx.php on line 351
[Tue Aug 31 04:12:02 2010] [error] PHP Fatal error:  Call to undefined method CI_DB_mysql_result::\xb0\xd7\xcd\x19\xf6*() in xxxxxxxxx.php on line 62

Suddenly it all session error messages.

Error line is 'result' method call. it all.

probrem a this code?

Code:

function find($condition) {
    $this->db->stop_cache();
    $this->db->flush_cache();
    if (!is_array($condition)) {
      $condition = array('id' => $condition);
    }
    $entity_list = $this->db->get_where($this->table_name(), $condition);
    if ($entity_list->num_rows == 0) {
      return false;
    }

    $entity = NULL;
    foreach ($entity_list->result() as $row) {
      if (!isset($row->deleted)) {
        $entity = $row;
        break;
      }
    }
    $this->db->start_cache();
    return isset($entity) ? $entity : FALSE;
  }

I'm japanease. im sorry bad english.... X(