Please check under the menu, Studio One > Studio One Installation to see what is installed, and what is not installed. Here is a screenshot showing what to look for:
- Click Show Packages.
- Expand the category.
- Check status of the installation.
Install the packs that are are not installed to a directory Studio One > Options(Windows) / Preferences(macOS) > Locations > Soundsets has listed for soundsets.
After you do this, re-index your presets. Here is a screenshot:
- In a song, select the Browse Tab.
- Select the Home Icon.
- Press Re-Index Presets.
Check to see if the issue is resolved.