There is a bit of a kerfuffle WRT ESS plugins and Mach dev versions. If you read the Warp9 forum you can learn of this. This is making upgrading dev versions and ESS plugins a bit confusing, and your use of Industrial just complicates it a bit more. If the machine runs and you're relatively happy, I'd sit on it.
That said, if you DO want to venture into it, rename your Mach4 directory to something meaningful, like Mach4Industrial_4481, install a new version from scratch, then copy your license, profile, screens, plugins, etc, over to the new version, copy the new ESS plugin in, and try it. If you get stuck, some simple directory renaming gets you back.
Mostly depends if you want to play or if a working machine is more important!! Personally I've put a halt on Mach4 dev/ESS fiddling.