This would most likely fix any issue you are having setting the tiles.
PHP Code:
addtiledef tilename.png,levelname,1;
For example:
PHP Code:
addtiledef s64_sky_tiles_final.png,izone-outside1.nw,1;
or even
PHP Code:
addtiledef s64_sky_tiles_final.png,izone-outside1,1;
should work not sure though.
For a gmap:
PHP Code:
addtiledef s64_sky_tiles_final.png,izone-outside_,1;
These are simply examples of how to setup the tiles in the Graal Editor. You will need to use the correct tile and level name.