When loading spritesheet, you can enter frame width for non-square tiles.
An attempt to save spritesheet gives
Save Spritesheet Message
Error while executing save-sprite-sheet:
Error: eval: unbound variable: gimp-item-set-visible
The script would appear to be written specifically for GIMP version 2.8 -- the procedure 'gimp-item-set-visible' was called 'gimp-drawable-set-visible' in previous versions.
After replacing "gimp-item-set-visible" with "gimp-drawable-set-visible" and
"(gimp-image-insert-layer anImage layr 0 0 )" with "(gimp-image-add-layer anImage layr 0)" - both load and save work.
2.8 is "stable" on the site, but not in repositories yet.
Also, maybe it's a good idea to add some note that sprites are assumed to be square? After looking at what it does, this becomes kind of obvious, but still. Until there's a good way to init widgets, anyway. :]
No questions yet ...