Custom Textured part does not render correct

[Philippe Hurbain]

Oh, I attached the PNG but it got inlined.

...and I didn't notice because it was white on white background

Completely puzzled by this one. I see the same kind of problem, but I find no problem in the part or model. I tried a gazillon of things and the problem remains the same (or worse!). I tried with another texmapped part (3960p0b) that works fine. And if I put 93606p12 and 3960p0b in the same file... 3960p0b is textured in all images and 93606p12 is never textured