Oops, sorry that was my playing around with the files actually. Exchanged the "lbl_idside" with "C_Gizka01" and played around with it a while. I only had a GFX with BLACK and few colored dots. That's why it ended up displaying garbage.
About the Gizka Texture... if it really has that black bar, I have not seen it up to now, and I'm positive that it should not be there, unless you've gone outside the image range. Even my litte tool wrongdoing the colors does not show this black bar on the right side.
Is it just my imagination, or do almost all, if not all, 16 byte encoded textures use "00 FF FF FF FF FF FF FF" as pregcognition, before the 8 byte-encoding comes along?