I give a last try with going to admin modus under same conditions. Add: But that does not help avoiding this error! Until now it works with good frames and without CTD all add ons on. But as a said the error message comes sporadically but frequently. And I know in a beta we should not use add ons. While I also have had this error message without mods. But the more complex the scenery or the planes or the higher the graphic settings the more often this error CTD appears.