skipwater:
Try this using 7zip (7zip is free google it) to open the zip file. From what I can remember winzip and windows zip do not like zero size files or folders.
Skip
Thank you Skip... you're right, but the problem was not there... I think I found something else which caused problems (as I was finally able to see the contents of my first successful backup).
Since my webshop do use IMAGE HANDLER, I've found that the inclusion of the folder /bmz_cache would stop the script for unknown reasons...
/bmz_cache folder do contains the various images in various sizes for items on sale and its structure is somewhat particular: inside the folder there are 16 subfolders using a single character as a name ("0"~"f") and each of this folders do contain from 30 up to 100 files whose name is something like "f4c1e439d9719089428f509924152620.image.150x200.jpg"...
i.e.
/bmz_cache/0/f4c1e439d9719089428f509924152620.image.150x200.jpg
/bmz_cache/0/001e389e021733240fa9f2cabc32ef77.image.150x84.jpg
/bmz_cache/0/001e389e021733240fa9f2cabc32ef77.image.170x95.jpg
/bmz_cache/0/02be4a955844bccda43a0d6d6244ea9c.image.150x180.jpg
/bmz_cache/0/02fe4e81b9611961f668ebe971201cc7.image.150x180.jpg
...
/bmz_cache/3/3dc3d711e88dd8a1331f5425a8cc67c7.image.29x40.jpg
/bmz_cache/3/3dd8d6581b7299b9675719d65deac819.image.500x281.gif
...
I guess that this causes some troubles on command line which generates the archive file...
I confirm I was able to see my first successful backup only after placing this folder in the EXCLUDE list in backup_zconfig.php
Just to let you know. :huh: