The dreaded unityengine.texture2d error

[c0b4ltl1ghtn1ng]

I'm trying to revive a mod that was left behind for death come the b19 update, but I keep coming up this error for, like, ALL the textures

For an example, the code shows <texPath>Things/Building/Wall/CrappyWall_Atlas</texPath> with the \Textures\Things\Building\Wall holding CrappyWall_Atlas.png

I've tried deleting the file and replacing it, renaming both variants of CrappyWall_Atlas, even changes the little slashes around in the texpath and adding the file extension to the path, but so far nothing's been working. The mod was working fine b18, but one of its dependancies updated to b19.

What do?