FL Studio'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 ...
forum Title states it pretty well, all my vst's no longer work with note pan or velocity anymore...works fine in fl 10
Reflex can you shed some light on this. ...
forum FL 11 and it may have worked fine in FL 12.1.1 (can't remember on that for certain though) but it didn't work in 12.1.2 and now doesn't in 12.1.3
I only bothered to upgrade from 12.1.2 to 12.1.3 because ...
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