Sorry for a noob question.

I have just installed a fresh zencart install. I then installed a dutch language pack, then a new template.

The template shows this instead of actual languate in the front end of the site. In English mode and (newly installed) Dutch mode:
HEADER_TITLE_TOP_TEXT
TITLE_EZ_PAGES
TITLE_GENERAL
...and more like this.....

So here it is missing the value (actual language) of the items above.

What am I doing wrong? Should i install language first, then template, or template, then language?