I had a similar problem, hoped this would cure it, but no luck. It turns out that after I installed the latest version of enchantrix, about 5% of my items still show what they DE into, but the other 95% do not show any information at all about DE. Anyone have an idea what might be going on here?
Try entering this at the chat/command line: /enchantrix default all
That should reset all of the options, then see if that does not cure your ills.
If the command line does not work, then you will need to find the Enchantrix.lua within the ..WorldofWarcraft\WTF\Account\<YourWOWAccountName>\SavedVariables and simply rename that to Old_Enchantrix.lua and then start up WoW. That will force the game to create a new enchantrix.lua with the default settings.
Once that is done, then you can adjust the settings to your liking, if needed.