The following Knowledge Base article on the Micro Focus Support Portal provides a patch and instructions for fixing your system - click here.
To patch your system before you can successfully run the Enterprise Developer installer:
regsvr32 C:\ProgramData\Microsoft\VisualStudio\Setup\x86\Microsoft.VisualStudio.Setup.Configuration.Native.dll
The 7.0 installer should then run successfully.
From Enterprise Developer 6.0 and later, the installer on Windows has automatically started the Enterprise Server Common Web Administration (ESCWA) service as part of the installation process. When using the Japanese system locale on the Windows operating system, the ESCWA service does not start automatically. During the installation process you might be required to press Retry to complete a successful product install. Even after a successful product install, ESCWA does not start until you have installed a valid license.
If you accidently click YES, you need to re-enable loading the packages, as follows:
devenv /ResetSkipPkgs
When you reboot the machine, the problem is resolved, the PATH is set up correctly and the packages are found.