Hello Alfred
That's interesting. If you are still interested in investigating this I have one more suggestion for you to try.
I believe you downloaded and extracted the compressed files using a Mac.
The built-in Mac archiver by default handles compressed files a little differently to Windows, and perhaps this may result in a very slight difference in the extracted file that the Genos is sensitive to.
If you use the built-in Mac archiver to create a ZIP files, by default the Mac creates two extra folders in the ZIP file that create hidden additional Mac-specific resource information files. Extract that ZIP file using the Mac archiver and it reads the info in the extra folders during the extraction process to produce the original un-zipped files, and you do not see the 2 extra folders that the Mac pur in the ZIP file. However, unZIP the archived files on a Mac using a third-party extractor (such as Winzip for Mac), or extract it on a Windows computer, and in the folder containing the resulting extracted file you will also find the 2 extra folders (__MACOSX and .DS_store).
As the Mac archive extractor has to deal with these different ZIP files created on a Mac to read and act on the contents of the two extra folders, perhaps it does something slightly differently when extracting a ZIP file created on Windows computer (which don't contain this information), and the Genos is sensitive to this.
Therefore, I suggest you try extracting your downloaded ZIP file on your Mac using a 3rd-party extractor, and see if the resultant file can then be read by your Genos.
Regards
Roy