@MartinB, thanks, that was the important hint. I had copyied the complete folders but did not know, that I had to copy the

AL_Pent.ST2
AL_Mains.ST2

JL_Fusn.ST2
JL_Guit.ST2
These where missing on my WD hd. Now, everything is fine. I have all add on's. Thank you so much for your help!


So long,
mos