Ron5

I selected the languages Dutch and French in Settings – Languages – Languages.
The admin side of the website seems to be OK. On each page you see the 3 tabs of the languages, but the translation window at the right, as in the screenshot of John Clause, is not there.
When putting the Editor mode to Raw Mode all text of the 3 languages appear in one page.
When running the website for the end user an error message appears in the browser: Fatal error: Call to undefined function qtrans_generateLanguageSelectCode() in …\header.php on line 22.
header.php is the header file of the pinboard theme.
It is a website with Woo commerce. Installing the plugin Woocommerce & qTranslate-X results in the same error. This error appears for the website with no database conversion.

This is an example of the field post_title in the table wp_posts:

<!–:nl–>Contact<!–:–><!–:fr–>Contact<!–:–><!–:en–>Contact<!–:–>

The website was trilingual: English, French and Dutch.
After updating WordPress 3.5.1 to 4.2.2 the website was only in English. The links inviting to the French and Dutch version were gone.
Removing the old translation plugins and installing qTranslate X did not reveal any change.
The English version does not show any broken layout.
The translations are evidently still in the database. So, I need a way to have access to the French and the Dutch texts in the database.

Yes I read it, but i am stuck at step 15: database conversion.
The database was big: about 100 Megabytes.