When I installed the last version of C8.1; an update that came out some time after they C8.5 beta; C8.1.1.12, quite often scenes will load with chanels useing textures set to blank; which is an imposable setting that doesn't actually exist. You have to reset them all to sampling sumond or gausnian. It doesn't happen with every scene or every shader that uses textures, so I'm not sure what causes it.

I doubt Feneric's plugin can do that, but I am not at all sure.