You will find the detailed error on the log file.
Most likely it is an access right issue on file system when attahced files en temp thumbs are saved.

Hello,
Thanks for your quick answer!

Unfortunately I saw it only now 🙁

You are right, there is an error in the log file, but what to do? :S

2013-08-26 15:23:33 ** ERROR ** ERROR **
2013-08-26 15:23:33 ** ERROR ** on file '/var/www/html/projectorria/tool/file.php' at line (137)
2013-08-26 15:23:33 ** ERROR ***** cause = mkdir(): Permission denied

I don't understand as the system allowed to create it and we can see this attachment link in the SQL tables. So having a permission problem on read and not on write looks strange 🙂

Thanks in advance for your support

M

The user running PHP must have right access to /files directory as it tries to create /files/thumbs directory.

Either you give write rights to /files, or you create /fuiles/thumbs and give write rights to this folder (755 at least)

Hello,

As the rights were already the one you recomanded me, I finally deleted the Thumbs folder that was already existing (but empty) and it has been recreated automatically by the site when i opened the ticket where the jpg was attached.

So everything is ok now

Thanks for your support.