Don't panic. This is actually a very common issue on macOS, and fortunately, it has a simple cause and an even simpler fix.
: If the error persists, manually delete the existing Soundtoys plugin folders from your Library or Program Files, empty the trash, and restart before running a freshly downloaded installer from your Soundtoys Account . Standard Installation Paths for Reference Operating System Presets Path Windows C:\Program Files\Common Files\VST3\Soundtoys C:\Users\Public\Public Documents\Soundtoys\Soundtoys 5 macOS /Library/Audio/Plug-Ins/VST3/Soundtoys /Users/Shared/Soundtoys/Soundtoys 5 Don't panic
A common culprit for this specific "root folder" error is a redirected folder. If you have moved your Windows Temp directory to a secondary drive to save space on your SSD, Soundtoys installers may fail to create the necessary directory links. Many users report this immediately resolves folder creation
If you are on Windows and have moved your temporary files, reset the path to the default: C:\Users\[Your_Username]\AppData\Local\Temp . Many users report this immediately resolves folder creation errors during installation. empty the trash