How to fix "Droid4X Install failed!" absolutely works !

You've got this message when install Droid4X on macOS ?

Today I've solution to solve this problem.

First: Check on your Launchpad if Droid4X installed you were found Droid4X icon in Launchpad.

Second: Try to launch Droid4X in Launchpad. if you get this message while launching Droid4X  or anything.

Third: Try to download the latest VirtualBox .

If you already have VirtualBox then try to uninstall using AppCleaner or anything like that.
then click delete.

Fourth: If you uninstall finished then try to install latest VirtualBox that you've downloaded.

Fifth: Launch Droid4X in Launchpad.

Sixth: We've fixed it.