I found something that has worked for me. Please understand, I offer no guarantees or promises, but this is what I did for all the planes in my Community folder. Last week, I applied a fix I found on flightsim.to that appears to add this line:
fallback.9=…\texture\Planes_Generic
to the texture.cfg file in the texture subdirectory of each plane. That didn’t seem to work for me, so I tried a few things here and there. I found that when I made an additional change, it worked. I added another line (or moved it when it was present) so these two lines are always last:
(Please note that the forum code wouldn’t allow me to paste in the text as it is because it wants to consolidate the slashes and dots for some reason. I had to create a JPG instead:
I assume you should change the number sequence to make sure they follow the other lines accordingly. You may not have to as long as they are higher numbers than the preceding lines, but I wasn’t sure so I did anyway.
If you want to try this, I strongly suggest you first backup the file if you have any reservations at all about making changes. Also, I suggest you change only one or two then test so you don’t waste hours on this if it doesn’t work for you. And if you have hundreds of planes in your Community folder and this would be way too much work, I’m sorry. It was worth it to me because I have only thirty or so, and I got tired of seeing all the pink textures.
Best of luck to you.