I have a problem also i downloaded galaxyforge then I used 7-zip to extract it to under stardock games folder but i get two diagnostic messages from 7-zip.
cannot open output file C:\Program Files\Stardock Games\GalaxyForge1.1\GalaxyForge.exe
cannot open output file C:\Program Files\Stardock Games\GalaxyForge1.1\Ironclad.Managed.dll
The files show up in the 7-zip file manager directiory but not in windows explorer and I have deleted and reinstalled it several times