Hello,
I just upraded zencart 1.3.9h. to 1.1.5a by myself from this procedure: https://www.zen-cart.com/content.php?148
I had the french language pack installed on my 1.3.9h version. And the box_multi_EZ_pages.

My site is: h t t p : / / w a - s h i a t s u - n i c e . f r

Here are the php and MySQL versions:
Serveur Hôte: mars.fr.planethoster.net (10.185.0.21) Hôte Base de Données: localhost (127.0.0.1)
OS Serveur: Linux 3.10.0-427.10.1.lve1.4.7.el7.x86_64 Base de Données: MySQL 5.5.5-10.1.18-MariaDB

Serveur HTTP: LiteSpeed
Version PHP: 5.6.27 (Zend: 2.6.0) PHP Limite mémoire: 256M PHP Safe Mode: Off
PHP Uploads de fichiers: On Taille max upload par fichier: 64M Taille max POST: 128M

Since this upgrade I have a blanck page on admin and can't access to anything.
To resolve it i followed these instructions: https://www.zen-cart.com/content.php...lling-zen-cart

and

https://www.zen-cart.com/content.php?123

Here is the debug log content:
[22-Oct-2016 18:58:38 Europe/Paris] Request URI: /JimMy-WIm-Green/index.php, IP address: 82.234.171.203
#1 require() called at [/home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php:35]
#2 require(/home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php) called at [/home/washiats/public_html/includes/autoload_func.php:48]
#3 require(/home/washiats/public_html/includes/autoload_func.php) called at [/home/washiats/public_html/JimMy-WIm-Green/includes/application_top.php:171]
#4 require(/home/washiats/public_html/JimMy-WIm-Green/includes/application_top.php) called at [/home/washiats/public_html/JimMy-WIm-Green/index.php:10]

[22-Oct-2016 18:58:38 Europe/Paris] PHP Warning: require(includes/languages/french.php): failed to open stream: No such file or directory in /home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php on line 35
[22-Oct-2016 18:58:38 Europe/Paris] Request URI: /JimMy-WIm-Green/index.php, IP address: 82.234.171.203
#1 require() called at [/home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php:35]
#2 require(/home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php) called at [/home/washiats/public_html/includes/autoload_func.php:48]
#3 require(/home/washiats/public_html/includes/autoload_func.php) called at [/home/washiats/public_html/JimMy-WIm-Green/includes/application_top.php:171]
#4 require(/home/washiats/public_html/JimMy-WIm-Green/includes/application_top.php) called at [/home/washiats/public_html/JimMy-WIm-Green/index.php:10]

[22-Oct-2016 18:58:38 Europe/Paris] PHP Warning: require(includes/languages/french.php): failed to open stream: No such file or directory in /home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php on line 35
[22-Oct-2016 18:58:38 Europe/Paris] PHP Fatal error: require(): Failed opening required 'includes/languages/french.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/washiats/public_html/JimMy-WIm-Green/includes/init_includes/init_languages.php on line 35

Could you help me please?
I am lost.

Best regards.