Finally I was brave enough and updated to the latest build .. and WOW, there ARE indeed maaaany changes, compared to the 1.20.xx build, I was using until now.
I really need to get my head around all that
The most significant thing I noticed was , that the whole scaling of image maps did change. A lot. So many options now. I often use(d) seamless textures, for walls or floors and all that. Which took me some time, to get the scale right, back then. Now everything has changed, so it seems and it starts right over again LOL. Where previously I had a scale (float1) of 4 or 9, it's now 0.2 or something? Aye ... gonna take some time to figure out all that again.
But thanks Paul, for this huge and amazing update of the plug in. Chapeau!!!