Hey,
First I would like to thank you for this great theme!
I purchased today the theme that also includes the languages folder with several examples.
Now, I was trying to change the language per to your guideline, but it fails
Then open the wp-config.php file from the root folder of your WordPress install, and replace the line:
For example:
define ('WPLANG', 'de_DE');
The languages folder is in the following path:
C:\wamp\www\agile-wp\wp-content\themes\agile\languages
And it includes the de_DE.mo and de_DE.po as originally provided by you.
I started to debug the software, but again, nothing helps..
I am a programmer, but with medium experience in wordpress.
The wordpress version I am using is of version 4
I only care to change the theme frontend language and not the admin that is english.