FLStudio 12.1.3 or higher, to check your FLStudio version navigate to "? > About" in the Toolbar. If not, download the latest version HERE . Perform a verified plugin scan
Open 'Options > File Settings'.
Select 'Plugin Manager ...
FLStudio and re-scanned my plugins. After the scan was complete I got the following messages (see the picture below):
WaveShell1-VST3 10.0 error
WaveShell1-VST3 10.0_x64 [64bit] error
I turned off my computer and re-ran the scan ...