Funny you should mention that mod, that's where I went to find out where the texture was

Turns out that the stock picture is a dds format file. I tried removing the .dds and replacing it with a .tga (like is used in GIEP) and it works fine. So, now it's just a matter of changing a couple of lines of code and rewriting the instructions for the "Uboot" version, which I'm tentatively going to call "Fraulein in jedem Hafen" (unless someone corrects my German, which I last studied when Nixon was president:rotfl