worth a try ... but what kind of zip-backups???^^
never got those when downloading something out of the store... only the original files in the purchased-folders.
strange things happen here.
you can also try to send a mail with description and link to this thread to TGC-service, could be that they can help or explain what happened (i am still very sure that there is something wrong with your filepaths or download).
if i would own any of these models my own i would say send me entity/script/texture-sample out of them and i will look on my machine if working, but i dont have any of those and you are not allowed to share them, so tgc-service will be your best choice if no one else has a solution.