I installed OS X Remote Software on Mac Mini 2009 under Snow Leopard and it works! It didn't work on my Mac Pro 2009 though, I think the USB chipset is different as both Macs run on 10.6.6.
I updated the OS in Noah EX to 1.4.23 (latest version) via Complete Update. I installed the following plugins from OXE files (shows up both on hardware and via Remote Software):
B-2003
EDS8i
Interpole
Lightwave
Minimax
ProOne
Prodyssey
Prophet 5
SixString
Vectron Player
Vectron
Vocodizer
The problem is that after the update I lost all my keys. Every single plugin, including EDS8i and Vectron is telling me that it needs keys

I checked back the forum and it seems that I am in need of keyfile (allkeys) and that the only way of obtaining this is to ask nicely at SonicCore. I emailed them today and we will see...
Blimey, no fun with Noah EX yet.
Cheers,
Mac