Si it's probably not needed, because if I remember correctly, those directories won't be created automatically if they are needed.

Anyway, neither phpSavePath nor upload_tmp_dir were defined. So I defined them within my php.ini file [i]and[/i] I created those folders. No change.

Two other interesting bits of information:
– I used only lowercase letters (dsc3443.jpg) : no change.
– I tried to upload two photos and create a new unpublished sub-album at the same time. The sub-album was indeed created, but no photos were uploaded. Nothing was saved in the upload_temp_dir directory, and the following was saved in the phpSavePath directory:`

file:    sess_137[i]with quite a few letters at the end[/i]

content: uploadtype|s:6:"jQuery";`

I did look at the script. The destination of the upload should be into your "album" folder. But I do not know what intermediate storage the script might use.

Indeed, and that's where the sub-album was created (in /albums/people as requested). No idea about intermediate storage either. It feels like everything is uploaded "somewhere somehow", then the script does something illegal...

So, then, any error messages anywhere? You might also see if there is any help at http://www.fyneworks.com/jquery/multiple-file-upload/#tab-Support

Error messages : nothing really. I have posted a few before, but I don't see anything significant. As if the file simply "disappeared". It seems to upload completely than stop during parsing
(SyntaxError: JSON.parse: unexpected character)

When I peruse through the zp-core/admin-jQuery folder, am I right to figure that upload_form.php and uploader.php are yours, while the others are from the jQuery Uploader developer?

I had looked before at the site referred to in the header of the jquery.fileupload.js file and I haven't found anything. I'll look at the discussion forum to see if, by any chance, I find anything.

Yes, those two files are the ones by us.

uploader.php contains a jquery class definition that came with the package.