The Steam version of Dex was updated on Aug 1st, 2016; maybe that's why the Editor's Inventory portion doesn't work. (all 0's - the Main section has non-zero numbers) If so, please update?
Btw, tried the "TRAINER OUT OF DATE?" link, but that lists GoG instead of Steam. Didn't want to lose 500 points due to miscommunication.
Edit: Using Steam version of game & trainer, and running game & trainer as Admin.
[Edited by Forsythe, 8/27/2016 6:06:57 PM]
[Edited by Forsythe, 8/27/2016 6:14:12 PM]
I'm having the same issue.
Running the Steam version of the game as well.
The "Trainer out of date" link only lists GOG for me as well.