Slices and joins scriptfu is useful when you want to split one image 'file' into smaller 'files', and to recombine it successively. One single image 'file' can be split into unlimited number of files. Image-slice script save on the file imagename.rcm all the data for the reconstruction.
Bugs fixed and enhancement:
Duplicate file name
Invalid path name (Linux user)
Slice export maintains the transparency.
Add Option in order to recompose all pieces on a layer.
Limited the maximum number of lines and columns to the dimension in pixel of the image.
For more information