Gimp script error
There is a poorly part while using the 'Layers to png script' in Gimp.
[Use of system]
MacBook Pro Yosemite 10.10.1
Gimp 2.8.14
[script that used]
https://github.com/clofresh/gimp-spine
[Results]

Left: without a script, it was positioning an image to a previous scheme
Right: Using a script
The size is enlarged.
There are layers are in reverse order.
How I can use this script?
Please help me.