Because this SCM script adds itself to the top menu under a sub menu named layer Groups, i decided to fix it.
I like all my layer tools under the Layer menu so here is the script fixed to show a menu Layer Groups under the Layer menu item.
Okay Gimper will not allow over 20k characters in one given post and it also will not except the SCM file extension in attachments....soooo
I uploaded it here - just select all and save in a text file as "mig-gimp-layer-groups.scm" - set your permissions however your system does it. (windows probably not needed)
Place the scm script in your scripts folder and refresh scripts Filters/Script-Fu/Refresh Scripts
You will find the filters under Layer/Layer Groups/......