Most recent patch broke mod images, but no other mods

I’ve been working on a mod for like 6 months now; one of the campaigns is complete and ready to publicly test, but the most recent update to AOEII has broken the images. No matter what I do, it gives these checkerboard images. If I use the paths for any other mod or any official content, it works no problem, but for my mod specifically, which is identical to those mods in every important way, it refuses. The images are fine, if I paste them into a different mod, they work. The mod itself is fine, it works perfectly. It’s just these images and nothing else.