Recently, I've had an issue where a few of the textures in some mods (I've only really checked Wegberg, Fuchsburg, and Kieslingen) are white. It's only a couple textures, for example the foam canisters and streetlights in Wegberg, and the engineer/Maschinist in Kieslingen, and the Fürstenberg trailer in Fuchsburg. I've tried both verifying the installation of, and uninstalling and reinstalling both Wegberg and EM4, but neither worked. The only thing that worked was a complete reinstall of Windows, but now it's happened again, and I'd really prefer to not have to do that again. I'm 99% sure it's not a graphics driver issue. The only thing I can think of that could have done this is editing some of Fuchsburg's textures in Paint.net (just fixing mirrored text on one or two vehicles and replacing any Bieberfelde license plates with Fuchsburg ones, that sort of thing), but I didn't touch anything in Wegberg.
Also, sorry for not posting in German.