There is an unknown conflict with the Korean version of MS-Office 2010 on Windows 7 computers (perhaps other OS as well) and the ability for ElumTools to obtain a license from the LAI Network Service. The workaround is as follows:

  1. Uninstall ElumTools
  2. Uninstall MS Office 2010 Korean IME
  3. Reinstall ElumTools latest version (>=2015.12, 2016.9, 2017.5)