Rudixx

.htaccess

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

With default (ugly) permalinks it makes no difference.

[ No bumping please. ]

Done. Deactivating all other plugins made no difference. Only switching URL Modification Mode to Query Mode makes difference.

If I Use Query Mode (?lang=en). Most SEO unfriendly, not recommended. Then it works fine but on any other URL Modification Mode the widget does not display featured images.

Theme name is: compRepair and my-carousel-widgeFred is a part of this theme.

Other plugins that I use are:
Advanced Recent Posts Widget
Breadcrumb NavXT
Contact Form 7
Meta Slider
qTranslate-X
UpdraftPlus – Backup/Restore
WP-PageNavi
WP Statistics

What do you mean not a very useful answer? Did you read my previous message with the screenshot?

I did read them links and I am not that advanced user to actually be able to fix it on my own.

Also ignore the first code. Second one is the one I need.

When qtranslate is deactivated it should look like this

https://www.dropbox.com/s/pgsr8mf3r8nwztf/Zrzut%20ekranu%202015-07-25%2016.40.31.png?dl=0

when it is active the thumbnails are not displayed.

Widget creator is not replying. Would someone be so kind and help me out please?