What would cause *nearly* all of the Meshes and Textures of a hitherto working, proven-to-function-properly mod to suddenly turn into little grey !'s*? BTW, it's not a corrupt save, it comes up the same in the CS

((*I DL'd Fliggerty's Error Marker - http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=5722 - highly rec'd))