Thx a lot. I have DL the pictures, changed to 1920x1080 px, encrypt them, put them into game, and voila, everything is working fine now. Only one small mistake: In line 1373: mom.film.28@62@m-mm-6@Mmmmmmm Max, you always give me soooooo much.... There is no m-mm-6 in the mod, I changed it to m-mm-5.
You have much more experience than me, so I only can guess, what might be the problem with the pics, that not work: Size, or encrypting without Seed file (didn't work for me, encrypt with Seed file works)