Honestly, it can't be unLZ fault. Remember I only adjusted the GUI basically. I'm sure that if you used the old one you would have had the same results. Also... when inserting backsprites, you better export the image only, and change the palettes through APE. That should be safer. unLZ can only guess what the right palette is, and sometimes the export palette option can lead to problems. Take the big intro hero, for example. Even if you see it right in 256 color mode, the palette isn't obviously. But if you enable the palette export, you will screw up things.