Please install MotionDuck with ZXP Installer.

  1. Download ZXP Installer here: https://aescripts.com/learn/zxp-installer/
  2. Install ZXP Installer and open it.
  3. Download this version of MotionDuck here: https://www.mediafire.com/file_premium/25ko694qgi31ek8/MotionDuck-r74.zxp/file
  4. Drag and drop the MotionDuck-r74.zxp into the ZXP Installer.

Then MotionDuck is installed!