"Call to undefined function hide_email()"

Being an Admin is no guarantee for having success during the first attempt to upgrade a site. :|

I did as it said in the readme:
1. Backup
2. Run upgrade.php (all 4 steps, successfuly!)
3. Copied all v7 files except _config.php and setup.php

Then I downloaded and copied up all the Danish Locale files

So, my site only showed this error:


Maybe the Danish locale, I then thought, and changed the language in the settings table to "English" using phpMyAdmin.
Same error appears; only with "English" in the path:


I could only find one other thread with the same error, and that seemed not to be the problem after all.

What puzzles me is that there is no reference to any function hide_email() in that file. It's a locale, and it only contains definitions of variables; the local texts...

I am out of ideas.
Anybody have some they want to share with me?