It's ok, I got someone to send me a working Picasso IV RTG boot hdf. Works like a charm, although AmigaLive reports the key shortcuts are broken in the non CGX version?
Which shortcuts? Making unit groups with ctrl + 1/2/3 etc.? Definitely works, just tested.
indeed, I had a really old version (v1.3)tested now v1.7.3 and grouping and the arrows for scrolling also work!! good job!