After installed popup " There is a problem with this windows installer package A program run as part of the setup did not finish as expected. Contact your support persomel or package vendor." 
I’mr try following step.
1.Uninstall and re-installer V.6 and last V.7
2.Installer file for fix from ms https://support.microsoft.com/en-us/help/17588/fix-problems-that-block-programs-from-being-installed-or-removed
All not working
Run on Windows 7 X86
*** Another programs can installed complete** Found a problem with emclient only.