Yes you are right. My fault!
I use different versions of EECH, mostly to make fullscreen screenshots (only possible with 1.15.2 - don't know why) and had forgotten to change back to 1.16.0. Must be a reason of working overtired at night on this. DDS was only used in 1.15.2.
Glad that I have not made a work on this, because it had been really useless