Necropolis Skin Mystery

So I've made skins in the past and imported them into the editor and they've all worked fine but for some reason it refuses to co-operate when I try to reskin the Necropolis (and its various upgrades).

I didn't mess with the alpha layers or adjust anything significant, all I've changed was the green run-off into red lava-like run off. I give it the exact same file path as it has in the mpq files. But when I test the map it still displays the old skin. If anyone's experienced this too and can help, it would be greatly appreciated.

Corricos

You didn't say what the problem is besides "it refuses to co-operate."