Modded files need to go into MyGames/Elemental/units folder, ( I shortcut that & call it SAVES ), or in the main directory/Mods folder.

If still not working, simply put your ORIGINAL unmodded files in a "safe" place...example ORIGINAL folder.

Vieuxchat, interesting.  I have not done that (created data/english) with the several other mods that I have installed, and they work without problems.   I wonder if that would make a difference.    Have either of you actually tried modifying the NameRuleset files (I actually have changed both the world and the Core files), and gotten it to work.    

I really do know how to use mods and I am using, and have created several.  It's just this one that doesn't seem to want to work.   If anyone has successfully modded the ruleset files, I'd love to hear about it.

thanks for the help.  

If you have capitals does it just fail or convert them to lowercase.  (I have a lot of capital letters in my names, which could explain the problem if that is a problem).

I tried a lot of things. You didn't add the iso-blahblahblah in your file. But when I added it it didn't change anything. You forgot the checksum part, but again, it wasn't that was hiding the file to the game.

I changed its directory (in mods, mods\data and mods\data\English). Nothing.

I changed the values of your probabilities to 0.267 (maybe numbers too long ?) Nothing

I copy/pasted the original file, get rid of every production rule but the first one, set probability to 1 and reaplce to "test". Nothing. Changed that file to mods then mods\data then mods\data\English.

Nothing.

Don't know what to try next...