FLStudio's plugin manager is not up to date with the latest versions of the SDK.
This was taken from the page "VST 3 Locations / Format" in the SDK documentation:
[quote]
On the Windows platform a VST 3 Plug ...
upgraded to a Mac.. I got My FlStudio 11 and wrapper... Which works flawlessly! The only issue I'm having is finding my songs so i can upload them on my site... Can anyone help with this? Thank you.. < > < > ...