hier sind die zeilen 172-187
if(is_array($_POST['chgpermission'])) $chgpermission=implode(",",$_POST['chgpermission']); else $chgpermission="";
$allowedavatarextensions = preg_replace("/\s*\n\s*/","\n",trim($allowedavatarextensions));
$db->query("INSERT INTO bb".$n."_groups...