There is a major error on the installer - EPIServer User Interface
Relative Path /your/relative/path/to/UI/ Get Error -- This Path is not allowed for to security reasons.
What to do in order to continue installation?
Hi!Your should change that path to something other than /your/relative/path/to/UI/, for example /episerver.
This path is the actual path you are going to use to reach the editing functionality, eg. mysite.com/episerver.