HyperDock needs access to the Accessibility-API to interact with the Dock. To authorize HyperDock in OS X 10.9 Mavericks and above, take the following steps:

  1. Open System Preferences.
  2. Open the Security & Privacy pane.
  3. Click the lock on the bottom left corner and authenticate.
  4. Select the Privacy tab.
  5. Select Accessibility in the left list view.
  6. Check the checkbox for the "HyperDock Helper" item.