Op 14 apr. 2013 om 14:43 heeft Felix Natter <fnatter@gmx.net> het volgende geschreven:

the freeplane project (http://freeplane.sourceforge.net) is currently
using mediawiki 1.14.1.
From this page:
 http://www.mediawiki.org/wiki/Extension:Translate
I derive that it's probably only supported in >= 1.19. Is this true?

Yes. MediaWiki 1.14 went end of life early 2010, one year after its release, which was 4 years ago[1].


What is the easiest way to make this (or a similar extension) work with
mediawiki 1.14.1 (of course while keeping the existing pages)?
Currently we have only English pages, but the Freeplane user base is
growing so we need French pages as well.

There isn't one. Your version of MediaWiki is not supported.

I advise updating to the most recent stable version. See http://www.mediawiki.org/wiki/Manual:Upgrading

[1] http://www.mediawiki.org/wiki/Version_lifecycle

Cheers!

Siebrand