Gostek problem

[Grimbad]

Yesterday I tested my work in progress warhammer 40k mod in 1.5 for the first time. I was frustrated to find that my space marine gostek has suddenly developed a somewhat serious problem (in addition to generally being a bit ugly). There are black rectangles behind the arms (see picture).
Only this gostek has this problem. I re-copied the gostek from my 1.4 folder to make sure it wasn't a corrupted file or something. The boxes aren't there in 1.4.2. I checked all the parts of the arm, and the ranny parts, to make sure they were all in order.
Anyone have any idea what's happening?
edit: Doubled size of picture, added an old picture from 1.4.

[Espadon]

Hands are dlon. Looks like your dlon-2.bmp is messed up.

[Grimbad]

Re-checked dlon2, and there shouldn't be anything wrong with it, though I don't think the problem is with dlon, or even with one of the 2s.
The boxes are there whether I'm facing left or right, and extend all along the arm. The right-facing pic is to show that this wasn't here when using the same gostek in 1.4.

[Espadon]

Can you upload your gostek folder here in a zip?

[Grimbad]

Can you upload your gostek folder here in a zip?

I would, but I just fixed it. Through an awful lot of trial-and-error I figured out it was the rekas. When I checked them, they were for some reason black-and-white only (if I tried to put red on them, for example, it turned up gray instead), so I copy-pasted reka into a blank file in paint to make it into a color image then saved over the original, and it worked. Don't know why this is only a problem in 1.5 though.