luckily, that file turned up as well!
The zip seemed to be corrupt, so I recreated it: After fixing
it with zip -FF I unpacked the result which still showed some errors
and then created a new zip from the unpacked files.
it's more or less usable now!
all images (except for the ones of moinmoin itself) are still missing.
possibly articles are missing as well, haven't checked yet
(and the lost downloads are missing, of course)