Weird UV map problem

I’m having a weird UV mapping issue. All my other show UV mapping just fine. But this model, no matter how many times I go back to previous saves of it that I know worked before… have this issue.

What the issue is, is when I go to save UV maps as wireframe tga’s, I can save all the UV’s at once and I’m just fine, but if I attempt to save selected UV’s as a wireframe image and I get a blank texture, every single time.

that sounds somehow familiar, have a look: