So here's an update...even with Rail's (Platinum Samples) help, I never got BFD Eco to find the Andy Johns drumkit pieces. Here is why I believe this happened...I installed from the original DVD's, and installed to a folder I created on a dedicated internal drive on my Mac Pro.
I then launched BFD Eco and it gave the message I had unauthorized kit pieces, so I authorized them. I then selected "Add Data Path" but here's where I went wrong - I added the wrong data path. Since I couldn't see the kit pieces, I thought well maybe I need to delete the install and start over, which I did. This time I installed to a correct data path, however, since BFD Eco authorized the "wrong" folder to begin with, it wanted to see a folder that no longer existed. Long story short, I had to give up on ever getting the Andy Johns Drums into Eco.
The good (well, better) news is that I downloaded another of my expansion packs, Signature Snares Vol. 2, and installed that to a correct data path, Eco found it, I authorized it, and those kit pieces come up in Eco.
Two takeaways from this - one, fxPansion doesn't give us precise information on WHERE EXACTLY to install data, other than to say that a dedicated drive is a good idea. There is no info on EXACTLY what to do..do we create a new folder for the expansion pack on the dedicated drive and install to that, or do we just install straight away to the ROOT LEVEL of the dedicated drive and let the installer create its own folder? When you run any installer, you always get a message "the folder does not exist. Would you like to create one?" And if you click OK, it does create a new folder into which it deposits the expansion pack. For Sig Snares 2, I created a new folder on my dedicated drive called "Sig Snares 2" and directed the installer to that folder. After installation, I could see that inside my folder, the installer had created yet another folder called "Signature Snares 2" with a sub-folder inside that called "Audio", and all the data was in the "Audio" sub-folder. Now I believe it is only necessary to install the data to the ROOT LEVEL of your dedicated drive, and the installer will create its OWN folder for you.
Takeaway number two - DON'T install from old DVD installers. Download the latest installers from fxPansion's site, as they contain all the numerous fixes and patches that were created for the expansion pack over the years of its existence. Example - the DVD installers for the first version of BFD XFL and Deluxe contained some problematic samples which fxPansion issued patches for later.
If anyone else has comments about this rather cryptic installation of fxPansion products, I would love to hear them. And I would truly love it if fxPansion would update its FAQ pages with precise and detailed information on exactly how, to the letter, to install expansion packs.