Only a week ago I was running FCP7 on El Capitan just fine. I upgraded to High Sierra, found out it wasn't compatible, and downgraded to Yosemite (didn't have el capitan install file). Two of my most used plugins "magic bullet looks" and "lock and load x" do not show up in FCP7 under effects. The stand-alone app for looks works, separately from FCP7. I uninstalled FCP7 and Magic Bullet Suite, followed by a re-install. The plugins under Mac HD/Library/ApplicationSupport/Final Cut Pro System Support/Plugins DO show up and work in FCP7. This includes Magic Bullet Misfire plugins. The 'looks' and 'lock and load' plugins are installed under Mac HD/Library/Plugins/FxPlug and none of them show-up. I have no idea what to do.