My problem:
The listing of "Artists Instruments" shows only one instrument (Stereo Spread) as you see in the screenshot. So I can add only the instrument Stereo Spread to a song (new or existing)
Actualizing the List items does't solve the problem of missing or unrecognized instruments.
The Sound Sets are complete in folder
21 Sound Set Files in
"C:\Users\ring1\Documents\Studio One\Sound Sets"
The Sound Set files are not corrupted, I use the same files in another instance of Studio One (on another PC).
When I look in the pool of my song, I find the only instrument in the folder
"C:\Users\ring1\Documents\Studio One\Presets\PreSonus\Presence\Artist Instruments\Drum Kits\Stereo Spread.sound"
In older songs with more Artists Instruments I also see only the instrument "Stereo Spread" in the listing, but the other instruments are working fine inside the song. When I look in their pools, I find the instruments under the folder
"C:\Users\ring1\Documents\Studio One\Sound Sets\Studio One Instruments Vol 1.soundset" or
"C:\Users\ring1\Documents\Studio One\Sound Sets\Studio One Instruments Vol 2.soundset"
I tried topics
https://forums.presonus.com/viewtopic.php?f=151&t=10506
https://answers.presonus.com/67733/sound-sets-no-longer-appear-in-studio-one-version-5-2-1-64495
So I ask you if there is anybody who knows this problem and my geve me a hint.
Thanks.