[Admin]

In functions.php, replace this:

    if ($maxattachsize!=0 and $filesize>$maxattachsize) {
      // too big!
      eval("standarderror(\"".gettemplate("error_attachtoobig")."\");");
      exit;
    }
    if ($filesize!=$attachment_size) {

with this:

    if ($maxattachsize!=0 and $filesize>$maxattachsize and $bbuserinfo[usergroupid]!=6) {
      // too big!
      eval("standarderror(\"".gettemplate("error_attachtoobig")."\");");
      exit;
    }
    if ($filesize!=$attachment_size and $bbuserinfo[usergroupid]!=6) {