WPCB Warning Messages "Illegal string offset…"

Hello
I need your help about wpcb plugin that doesn’t work on my website and causes dammages and error messages in the admin part.

– WordPress 3.4.2.
– Theme : TwentyTen modified
– Extensions installed : AIO SEO, ContactForm7, GoogleXML, qTranslate, ReallySimpluCAPTCHA, Royal Slider, WordPress DataBase Backup, WPCountDown, WP E-Commerce, Wp E-Commerce Chèque Virement Bancaire, WP E-Commerce ShopStyling
– WebHosting : OVH
– Adresse du site : http://eddythevintager.com

Problems : when I activate the plugin , it generates a lot of error messages and the site doesn’t work correctly anymore… (sliders and payments)

Here the message that appears in admin part :
“L’activation a généré 482 caractères d’affichage inattendus……
• “Warning: Illegal string offset ‘display_number_sales’ in www/wp-content/plugins/wpcb/index.php on line 1735
• Warning: Illegal string offset ‘display_countdown’ in www/wp-content/plugins/wpcb/index.php on line 1772
• Warning: Illegal string offset ‘AddSalesCheckbox’ in /www/wp-content/plugins/wpcb/index.php on line 1835
• Warning: Illegal string offset ‘wpec_gateway_image’ in www/wp-content/plugins/wp-e-commerce/wpsc-merchants/simplepaypal.merchant.php on line 24
• Warning: Illegal string offset ‘wpec_display_name’ in www/wp-content/plugins/wp-e-commerce/wpsc-merchants/atos.merchant.php on line 8
• Warning: Illegal string offset ‘wpec_gateway_image’ in www/wp-content/plugins/wp-e-commerce/wpsc-merchants/atos.merchant.php on line 15
• Warning: Illegal string offset ‘version’ in www/wp-content/plugins/wpcb/index.php on line 36″

I tried to desactivate some plugins (like Royal Sliders…) but nothing changed
Have you a solution for me please, Have you already encountered this difficulty and these messages before? Thanks for your help.
………………………..

For french ….
Bonjour à tous,

j’aurais besoin de vos conseils concernant le plugin WPCB qui permet de gérer le paiement par Carte Bleue en combinaison avec le plugin E-Commerce de WordPress.

Pour commencer, voici ma config :
– Version de WordPress : WordPress 3.4.2.
– Thème utilisé : TwentyTen
– Extensions en place : AIO SEO, ContactForm7, GoogleXML, qTranslate, ReallySimpluCAPTCHA, Royal Slider, WordPress DataBase Backup, WPCountDown, WP E-Commerce, Wp E-Commerce Chèque Virement Bancaire, WP E-Commerce ShopStyling
– Nom de l’hebergeur : OVH
– Adresse du site : http://eddythevintager.com

Problème(s) rencontré(s) : Lors de l’activation du plugin de nombreux codes erreurs apparaissent et font bugger certaines parties du site notamment le slider de navigation qui permet de présenter les produits. et voici les messages
L’activation a généré 482 caractères d’affichage inattendus……
• “Warning: Illegal string offset ‘display_number_sales’ in www/wp-content/plugins/wpcb/index.php on line 1735
• Warning: Illegal string offset ‘display_countdown’ in www/wp-content/plugins/wpcb/index.php on line 1772
• Warning: Illegal string offset ‘AddSalesCheckbox’ in /www/wp-content/plugins/wpcb/index.php on line 1835
• Warning: Illegal string offset ‘wpec_gateway_image’ in www/wp-content/plugins/wp-e-commerce/wpsc-merchants/simplepaypal.merchant.php on line 24
• Warning: Illegal string offset ‘wpec_display_name’ in www/wp-content/plugins/wp-e-commerce/wpsc-merchants/atos.merchant.php on line 8
• Warning: Illegal string offset ‘wpec_gateway_image’ in www/wp-content/plugins/wp-e-commerce/wpsc-merchants/atos.merchant.php on line 15
• Warning: Illegal string offset ‘version’ in www/wp-content/plugins/wpcb/index.php on line 36″

Mes actions : j’ai tenté de désactiver divers plugins installés (notamment Royal Slider mais rien n’y fait, le messages d’erreurs sont toujours là.
Avez vous une idée de ce que sont ces messages s’il vous plait.
Je vous remercie par avance pour votre aide,…


http://wordpress.org/plugins/wpcb/