After updating to 20, I transferred all my files and everything seemed to work just fine. Now after a restart, certain plugins can't find the custom presets that it found last time. It actually lost all plugins all together ...
FLStudio 12's demo to my Windows 8.1 laptop, I set up installation so that the FLStudio 12 folder will sit PC < C: (Windows) < Program Files (x86) < Image-Line, and VST files in Program Files ...