Custom Textures won't load - Game ID, path and settings seem right

[Guffin]

Yo guys, I really enjoyed this emulator for a while but today it gave me a little headache.

I tried to use the popular HD texture pack for Windwaker provided here but nothing happened.
The option "Load Custom Textures" under the Advanced tab in the Graphics settings is checked.
The unzipped folder is stored in \Load\Textures and is named after my Game ID (GZLE01), which I found in the properties of the image. I tried storing it in the global folder and in a local one via the portable.txt setup. I doublechecked each time that I'm using the correct folders by dumping textures, which would appear in the respective \Dump without a problem.
The provided files follow the new custom texture naming format mentioned here.

Does anyone know what's causing the problem?
I think you can see my specs in my profile.

Thanks in advance,
Guffin

[OatmealDome]

Upgrade to the latest development build first. (The latest stable version doesn't use the new texture pack format, so I assume that's what's wrong here.) If it still doesn't work: There should be an OSD message that pops up saying something like "Custom Textures Loaded, x mb in y seconds". Does that appear (and what does it say)?