Installed it from https://packages.debian.org/wheezy/amd64/gimp-plugin-registry/download
. There isn't one yet for 'jessie' (this is probably the reason why LMDE does not have gimp-plugin-registry
in its official repos) and I was a bit wary of 'sid' though both wheezy and sid have same version.
I added and activated the above, wheezy main repo, installed 'gimp-plugin-registry
' and disabled the repository again.
The 'resynthesizer' is working beautifully.
Hope it helps....