How to Install Oracle 2.0 on Windows
Install the Oracle 2 files into your VST folder manually. This video shows how. Don't forget the presets!
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How to Install on Windows
No Presets In Plugin
If you run Oracle 2.0 and only see the default instrument ("Oracle 2.0") in the presets list, the presets are probably still inside your download folder (folder called #PRESETS)
You need to copy the contents of that folder into the Oracle 2.0.instruments folder that is in your vsts folder.