After passing through registration, on clicking 'Install' button in the installer window, the CDK 2.2 get failed message.

Check the attached screenshots.

I also tried to add vagrant box through cygwin shell but getting some `eventmachine.so` related error.

NOTE: I am able to successfully add the cdk box on Vagrant 1.7.4 version.

Other information, I had following things pre-installed before running the installer:

• Docker toolbox (probably it remain there when I was trying it last time)
• Vagrant 1.8.1
• Cygwin
• VirtualBox 5.0.26