Bug with language detect

There is an error in the file “wp-security-core.php”
Change this line
load_textdomain( 'all-in-one-wp-security-and-firewall', WP_LANG_DIR . "/all-in-one-wp-security-and-firewall-$locale.mo" );

with:

load_textdomain( 'all-in-one-wp-security-and-firewall', WP_LANG_DIR . "/aiowpsecurity-$locale.mo" );

I hope developers will correct this error in the next update.
Bye

@vanhesse thank you for providing a solution. The plugin developers will investigate further into your solution.

Regards

We have fixed it in the new version (v4.0.1)

The language file name needed to be changed to match the new textdomain slug.