what i did:
install the game with the 3 windows installer files
after this is try to install the language pack

but...
after the update window a message appear... telling something about wrong version... make a patch log file with the following... (see below)

and the "funny thing"... i start the game... and it is german...

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A New Beginning patch log
Update from version 2.0.0.5 to German

Incorrect version of: A New Beginning\Language.xml
Incorrect version of: A New Beginning\videos\video.vv033
Incorrect version of: A New Beginning\videos\video.vv042
...
Incorrect version of: A New Beginning\videos\video.vv032
Incorrect version of: A New Beginning\videos\video.vv067