We are so sorry that you are getting an error when installing your fonts! Rest assured, we check all of our files before we release them so this may be down to the application you are using to install them. We've seen some members of our community having issues trying to install certain fonts using applications such as FontBook or Suitcase Fusion, as the recent updates have thrown up some compatibility issues. The reason for that is generally because the fonts that are much more graphically heavy, make them harder to install with certain programs.
We'd suggest trying to install the fonts directly so we've attached a really helpful on installing fonts below for you:
YouTube Tutorial- http://bit.ly/2eQIGd9
If you are still having issues though, please do contact our Support team here.