That’s great news! I’ll try it right now, thank you! 
Also, I’ve just updated the 1st post! ^^
Edit:
I’ve just tried the script but it seems that it doesn’t work 100% correctly. I made a simple sprite with just one layer and one frame, saved it, and the exported it to psd.
After that I tried to open the psd file with other programs, but I got these errors using Photoshop and Gimp
I could open the psd file using Krita, but the image was pretty broken.
In case somebody already got the script to work correctly, could you please help? 
Edit 2:
It seems that the 2nd version of the script works just fine. I’ve updated the 1st post to include a link to that version of the file.