Installation is half in German and half in Engish.

When installing Solidworks 2015 onto windows 7 machines, my whole office consistently get gui's which are half in English and half in German. Specifically, Datei, Ansicht Extras and Hilfe, the search bar and SOLIDWORKS Ressourcen are in German, but Getting Started, Solidworks tools and Community are in English. Does anyone know how to get Solidworks to install in a single language? Specifically it would be nice to have the option of German, English or French.

Thanks!

SolidworksUser Interface