Knud, I just looked at the screenshots you sent.
You should avoid to put the LDraw content library (including lgeo) under the Program Files directory. The LDraw content library does not have any application or program files and should not be placed under Program Files which is designated for application files and their dependencies.
In addition, most programs that must write content (like LPub3D must write fade files) and will not be able to do so under the Program Files directory because of UAC.
Also, for the 3D Viewer (LeoCAD) Library Archive location, I would recommend, in addition to a location not under Program Files, using LDraw's complete.zip along with having the ldrawunf.zip file in the same location. This way you will not have issues to generate fade files which uses the ldrawunf.zip archive.
You should avoid to put the LDraw content library (including lgeo) under the Program Files directory. The LDraw content library does not have any application or program files and should not be placed under Program Files which is designated for application files and their dependencies.
In addition, most programs that must write content (like LPub3D must write fade files) and will not be able to do so under the Program Files directory because of UAC.
Also, for the 3D Viewer (LeoCAD) Library Archive location, I would recommend, in addition to a location not under Program Files, using LDraw's complete.zip along with having the ldrawunf.zip file in the same location. This way you will not have issues to generate fade files which uses the ldrawunf.zip archive.