Yes it is for Gimp-2.7 versions interface only.
It needs to go into your gimp-2.7/plug-ins folder.
Usually that is under your userfolder directory.For instance mine (for Windows), is here.
C:\Documents and Settings\Rod\.gimp-2.7\plug-ins
Once installed you will find it under the Layers menu.
so you're saying this works with 2.7 only or 2.7.x?.....where to place file in the portable version? I do have a .gimp-2.7 folder within this folder(portable) on my desktop and a plugins folder within that..where I placed this file but I still get the error that the plugin failed to start.
nevermind....I dl'd from partha the regular gimp 64bit and installed and it showed up...