I have also the Problem that my TF-51D control sheet is complete Empty.
Here is my screen for example:
http://www.hms-development.de/Hope/tf-51D-fail.png
I tried to reinstall 3 timesw ( clean install after deleting all folders incl the User folders and reg cleaning. )
We also tried to copy TF-51D folder from another player to my user config input... that caused DCS to crash during start.
There is no way to export / import or change anything.
EDIT: Im running windows 8.1 Professional on an AMD Phenom II and a R9 270 GPU.