anchor.diff:                  ArrayList<String> admins = new ArrayList<String>(room.getAdmins());
                   Collections.sort(admins);
                   for (String user : admins) {
  -                    String username = JID.unescapeNode(user.substring(0, user.indexOf('@')));
  -                    String rest = user.substring(user.indexOf('@'), user.length());
  -                    String userDisplay = username + rest;
  +                    String userDisplay;
  +                    if (user.indexOf('@') > 0) {
  +                        String username = JID.unescapeNode(user.substring(0, user.indexOf('@')));
  +                        String rest = user.substring(user.indexOf('@'), user.length());
  +                        userDisplay = username + rest;
  +                    }
  +                    else {
  +                        userDisplay = user;
  +                    }
           %>
               <tr>
                   <td>&nbsp;</td>
  
positive.code:                 ArrayList<String> outcasts = new ArrayList<String>(room.getOutcasts());
                  Collections.sort(outcasts);
                  for (String user : outcasts) {
                      String username = JID.unescapeNode(user.substring(0, user.indexOf('@')));
                      String rest = user.substring(user.indexOf('@'), user.length());
                      String userDisplay = username + rest;
          %>
              <tr>
                  <td>&nbsp;</td>
  
negative.code:                 ArrayList<String> owners = new ArrayList<String>(room.getOwners());
                  Collections.sort(owners);
                  for (String user : owners) {
                      String userDisplay;
                      if (user.indexOf('@') > 0) {
                          String username = JID.unescapeNode(user.substring(0, user.indexOf('@')));
                          String rest = user.substring(user.indexOf('@'), user.length());
                          userDisplay = username + rest;
                      }
                      else {
                          userDisplay = user;
                      }
  
          %>
              <tr>
  