I've been trying to install GME 0.7.4 without success. This version is designed to run with ArcGIS 10.3 but I have installed ArcGIS 10.4.
Does anyone know if ArcGIS 10.4 is compatible (or can be made to be compatible) with GME 0.7.4?
The Acquiring and Installing GME page says:
This page contains the information you need to determine if GME is comptabale [sic] with your version of ArcGIS, the link to the GME installer, and installation instructions.
The most recent ArcGIS Desktop version listed is 10.3 and you are using 10.4 which suggests GME is not compatible with your version.
If the page needs updating/re-confirming then I think you should contact Spatial Ecology who are the developers of GME.