I just had the Funk Essentials not install so I opened the package and manually placed the 2 vst Sound files and the one image file in the folders and it works fine.
Inside the Installer window is an Additional Content folder that includes folders for Icons and VST Sound.
Navigate to the Groove Agent VST Sound folder: Mac HD>Library>Application Support>Steinberg>Content>Groove Agent>VST Sound
Place the two VST Sound files in the installe here .
Next, locate the Groove Agent icons folder: Mac HD>Library>Application Support>Steinberg>Groove Agent Common>LIbraryInfo
Place icon file here