Genymotion Error: "Unable to load VirtualBox Engine" on Yosemite. VirtualBox installed

I had the problem that VBoxManage was installed at /usr/local/bin/ which was not in the path for GUI apps. I did:

sudo ln -s /usr/local/bin/VBoxManage /usr/bin/VBoxManage

I've had the same problem, Use VirtualBox 4.3 instead of 5.0 That did the trick for me.

This work for me:

1. Remove current Virtual version and install VirtualBox version 4.3.

2. Run terminal and execute this line:

sudo /Library/Application\ Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart

3. Continue this line:

sudo cp /usr/local/bin/VBoxManage /usr/bin/VBoxManage

Now can run Genymotion.