Somehow I was able to add item or tool textures before. But now it doesn't even work now.
Everytime I press this little box that usually opens a window that lets you choose or import your own textures, this window never pops up on my screen.
I could do block textures but not the textures that I mentioned above.
I tried restarting my computer that didn't do anything either.
Please, PLEASE find a solution! I desperatly want to continue my mod!