Ok, I've found a workaround by using .htaccess file.
For everyone experiencing the same problem - you need to add this to your .htaccess file:
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^example\.com
RewriteRule (.*) http://example.com/$1 [R=301,L]
Remember to change "example.com" with your domain.
What it does it captures every
www.domain.com and redirects it into
http://domain.com thus fixing the problem with Ozio Gallery not displaying pictures when the site is loaded with "www"
Here's the source for this .htaccess trick:
http://www.webweaver.nu/html-tips/web-redirection.shtmlAnyway - it doesn't resolve the plugin problem completely (although it works for me).