Here are Screendumps of how I did not solve it:-)

These appear to be the correct files (the .mo files) in the correct place…

What about your core WP system? Is WP Admin > Settings > General language properly set to da_DK ?

Yes, I’m sure that I have Danish core translation. 

It happened when I pressed “get latest” translation. Could it have something to do with an SimplePRess update 5.5.11? And it is not in sync with the language file?

Can I have a link to your forum page?

There were no additional language items in 5.5.11 so it is the same file as before. Can I assume that f you open the ‘;po’ file in a text editor you DO see both original and translated text? Can you look?

Yes. Take a look.

… and what about the link?

Sorry:-)

http://www.trylleskolen.dk/forum

It looks like it is using the ‘sp’ (core) Danish language file correctly. For example – click on the search button at the top with no search text entered. The message I see is not in English! This text comes from the ‘sp’ language file.

What it looks like you have not got is the Simple:Press theme language file. Is that your own theme or one of ours? Do you have a language ‘mo’ file for that installed?

Thanks for fast respond. I’m back:-)

I have made a child-theme from reboot and named it reboot-trylleskolen. Perhaps that’s the problem.

I dont know what to do. 

I tried to make a new PO file by rename “spReboot-da_DK.po” to  ” reboot-trylleskolen-da_DK.po” and make a mo-file. Then I oploaded both into folder: /wp-content/sp-resources/forum-language/sp-themes. But it did not work. 

Please take a look at the screendump. 

What Am I doing wrong?

you do not need a different translation file…  unless you changed the text domain in the strings (not likely).. 

are you sure its a child reboot theme?  If so, it loads the reboot stuff as well.. did you follow the directions here:  https://simple-press.com/documentation/codex/themes/theme-basics/creating-a-child-theme/

I tested theme translation with child-theme: 

1. I checked the child-theme are active

2. I downloaded the reboot theme

3. Rename the reboot theme to child-them and oploaded it. 

Nothing happend.

Can you solve this mystery?

The important thing is the language ‘name’ that your SP theme is looking for.  This is contained in the template file ‘spFunctions.php’. So the first question is – do you have this file in your child theme. If not then your child theme will be reliant on the one in the parent theme.

By default, the supplied ‘name’ in the parent theme is exposed in the following function:

# load the theme textdomain for tranlations
add_action(‘init’, ‘spReboot_textdomain’);
function spReboot_textdomain() {
    sp_theme_localisation(‘spReboot’);
}

This shows that the language name is ‘spReboot’. IF you have such a function n your CHILD theme then you need the name exposed in that function instead.

This needs to be the name of the MO file that your SP theme will use and it needs to be located in the (again by default) /wp-content/sp-resources/forum-language/sp-plugins.

Going to our translation website and downloading the reboot Danish MO file gives me a file name of ‘spReboot-da_DK.mo’ which is what I would expect.

However, most importantly, the Danish entry for Reboot also informs me that it is 0% translated. So that also may be the reason you are not seeing any theme related translations on your forum.

Thank You very much for your awesome support:-)

Now I got it and solved it immediately. 

Enjoy your sunday!

glad we could help!  enjoy yours!