Go to the folder Palemoon -> Browser and unzip the omni.ja file. Go to the folder chrome -> en-US -> locale -> browser -> preferences. Copy the security.dtd file to the Desktop. Open in Notepad. Replace english language with german language. Paste and replace this file in your language location. (C: \ Documents and Settings \% UserName% \ AppData \ Moonchild Productions \ Pale Moon \ Profiles \ xxxxx.default \ extensions \ langpack-de@palemoon.org.xpi)