5h00n4y: You mean world 4's tileset? See the settings on this:
http://members.home.nl/meuwissenth/f...ggy_export.png
It exports a paletted bitmap, maybe your graphics program can't handle them? Same goes for the level bitmaps, though they are 32-bit bitmaps unlike the more common 24-bit variant.
Qube: No plans for a remake at all, that would be sooo much more work than this