Plug-ins: Drive / Library / Application Support / FCP System Support / Plugins / Magic Bullet Editors
[& also] Applications / Adobe After Effects / Plug-ins / Magic Bullet Suite
Serial Number: Drive / Library / Preferences / MagicBullet4Editors
After Effects plug-ins only
Drive / Applications / Adobe AE / then do a “Control Click” on the AE icon & that should bring a window up that has “Show package Contents” listed as 3rd line down. / Click that run a search in that folder (Contents) for Magic Bullet. This is where you would have multiple copies of Magic Bullet.