Impossible de créer un dossier à l'installation

Bonjour à tous.
Sur mon serveur synology, j'ai un joomla qui marche très bien.
Je viens de faire deux mises à jour plus la mise à jour de sécurité vers joomla 2.5.11 sans aucun souci.

Je veux maintenant passer la mise à jour de com_flexicontent_v2.0.2_J25_r1680.

après avoir lancé l'installation, Joomla affiche une erreur 'impossible de créer le répertoire cible'.

Je ne sais comment aller plus loin.

Je précise : tous les dossiers sont modifiables.

Avec l'installation depuis tmp, j'ai le message suivant : Impossible de trouver un pack d'installation

Merci pour vos pistes.
++

Hello,
the error does not seem to be related to FLEXIcontent

1. Go to Joomla configuration and make sure that the path to your tmp folder is correct (and that the folder exists)
2. Got check permissions of the tmp folder

also look online for more information , e.g.
www.ostraining.com/blog/joomla/jfoldercreate/

Hy, Thanks for your answer.
Indeed, it was a joomla bug.
I had to hack the folder.php file in librairie>joomla>filesystem by commenting the following line
$obd = ini_get('open_basedir');

The installation succeed, but I have an error :
Setting phpThumb Cache folder permissions UNSUCCESSFUL.
Converting deprecated fields 0 deprecated fields 'hidden' were converted.
0 deprecated fields 'relateditems' were converted.
-- Uninstalled deprecated plugin: 'relateditems'
0 deprecated fields 'relateditems_backlinks' were converted.
-- Uninstalled deprecated plugin: 'relateditems_backlinks'

But my phpthumb folder's rights are 777.
Do you know how to fix it ?

++
Pitou

Joomla bug? you mean specific to v2.5.11 ?

about phpthumb folder permissions:

the installation script tries to set permissions 755 and not 777, did you check that the owner of folders and files is correct?

if owner of field is wrong or if your server is not using su-exec mode then
- setting of permissions will not work)
- and permission 755 will not allow the PHP scripts to wrong because owner that has "7" is not the correct one

e.g. logon with FTP or with CPANEL to view the owner of the folders and files, this should be the CPANEL user of the domain

une autre solution pour eviter d'hacker ...
sauvegarde avec akeeba
installation sur un serveur local de dev
installation de flexicontent
test et tout
sauvegarde avec akeeba
installation sur un serveur distant

Salut

j'étais justement sur un serveur local...
Le serveur de prod n'a pas ce problème là
++