Running modern versions of on macOS Yosemite (10.10) is generally not supported by Image-Line. Modern installers typically require macOS 10.15 (Catalina) or later to function reliably.
Drag the FL Studio 12 icon into the Applications folder shortcut. fl studio mac os x yosemite download
For older Mac systems, running the Windows version of FL Studio via is often the most reliable method. Installing FL Studio onto Mac OS X Yosemite 10.4 | Forum Running modern versions of on macOS Yosemite (10