Cannot bring it to work

Hi all,

My configuration:
– WordPress up to date? YES
– NextGEN up to date? YES
– What version of NextGEN Gallery did you upgrade from? reinstalled the plugin after clean remove of all files after site move

– MySQL up to date (at least 5.0)? 5.5
– PHP up to date (at least 5.2.4)? 5.6
– The mod_rewrite Apache module activated? YES
– PHP Safe Mode OFF? YES

Additional information that will help us find a solution:
– Who are you hosted with? 1and1
– What theme are you running? ONETONE
– Which plugins do you have installed and activated?
Exifography 1.2
InfiniteWP 1.4.3
iThemes Security 5.1.1
Magee Shortcodes 1.2.6
Membership 2 4.0.0.7
My WordPress Login Logo 2.0
SNAP 3.4.29
Social Media Auto Publish 1.5.2
WordPress Database Backup 2.3.0
WP Hide Dashboard 2.2.1
WP-PostViews 1.71

– Does this error still occur if you switch your theme to a WordPress Twenty series theme and deactivate all plugins except NextGEN Gallery? (please be sure to clear your browser cache and reload your site after deactivating)
Didn’t tried yet

What happen and my issues :

1. Installed the gallery : no errors
2. Triyng to import a folder with 1 picture (test)
Errors in “Filename” Field : Warning: Illegal string offset ‘width’ in /mywebsitefolder/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/ngglegacy/admin/manage.php on line 208

Warning: Illegal string offset ‘height’ in /mywebsitefolder/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/ngglegacy/admin/manage.php on line 209
2012-SdP-167.jpg
3 janvier 2016
x pixels

3. When I try to insert a gallery in a page using the button :
Warning: Creating default object from empty value in /mywebsitefolder/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/attach_to_post/package.module.attach_to_post.php on line 668

4. When I try to insert a gallery with the code ([nggallery id=3]) instead of using the button :
We cannot display this gallery

https://www.ads-software.com/plugins/nextgen-gallery/