I am having a slight problem. After changing an s3o model around some, the second texture is inexistant... As in, it merely doesn't draw. All other units reflect and shine nicely, but this one refuses to work correctly.
Now, I shall explain, in detail, how I changed the s3o model around. I noticed that in screenshots, the extra 12 polies would be worth it. The front and back wheels had the polies on the inside holed out. Looks horrible in screenshots.
First, I went into wings, UV mapped it, then set its object to the same as everything else. After that, I moved it over the proper area, so it would have the correct texture. Exported via 3DS. Opened my s3o model in UpSpring. Loaded the wheels. Moved them into the correct positions, then deleted the old wheels. Noticed a problem. Oh noez, the wheel map needed to be flipped. So, I saved the wheels themself as a single s3o. Then, after that, I flipped them, then loaded them back in the s3o. Put them in place, etc.
Now, it doesn't use its secondary texture...