Installing my Reaktor ensembles?

[rpav]

Just got a Komplete 5 Inside; however I'm not getting anywhere in my attempts to install new Reaktor ensembles. Naming these various variations of *.fxp fails. Out of curiosity, I tried copying a .fxp from the Receptor and renaming it .ens, and my copy of Reaktor doesn't seem to like it either.

What exactly is it expecting here? The documentation on uploading patches is... vague.

Note, using Reaktor 5.15.002 on OSX locally.