Navigate to C:\Users\Public\Public Documents\ . Right-click the Soundtoys folder (if it exists), select Properties , and ensure "Read-only" is unchecked. In the Security tab, ensure your User account has "Full Control".
Reset the TEMP and TMP environment variables to their default location: C:\Users\[YourUserName]\AppData\Local\Temp . 3. Clean Reinstall (The "Trash and Reinstall" Method) cannot create soundtoys version root folder at soundtoys 5
If the error persists, corrupted old folder metadata (sometimes showing dates as old as 1970) can block new folder creation. Soundtoys 5 via your system's uninstaller. Navigate to C:\Users\Public\Public Documents\