FLStudio using the latest release.
4.Reset your FLStudio settings.
5/Windows - If the User data folder is set to a location inside Program Files, Windows may prevent FLStudio access and so FLStudio will fail to start. Reset ...
FLStudio 20 one project worked in FlStudio 12 with only instrumental music and I have not any problem. But after uninstall FLStudio 12, I try to open in FLStudio 20 a project of FLStudio 12 with ...