Texture Brushes not showing

I recently started using the texture painting, and import brush set, but none of the textures show up in the texture selection panel, when in sculpting mode.

The textures show up in the brushes panel on the right, they show up on the model when painted, but I cannot see which brush I am selecting with the texture option in the texture paint panel. All of them are black?

Is there any way to solve this? I’ve seen videos, and it loads all the images.

I have abut 100 brushes as jpg’s. (Also have png versions too)