Hi,
test this:
1. delete all folders for your categories in data/media/
(1, 2, 3, ...)
2. create now the same folders new with the
ftp-software for your categories in data/media/
3. all folders must have 777
4. delete all folders for your categories in data/thumbnails/
(1, 2, 3, ...)
5. create now the same folders new with the
ftp-software for your categories in data/thumbnails/
6. all folders must have 777
I think, the upload after this proc. is no problem.
gruß
Kurt