Hi Andre,just look here - problem is already known and will be fixed with the next release candidate or stable - whatever will be released first:http://forum.osticket.com/d/discussion//white-screen-in-replay-to-ticket/GreetingsMichaelPS: If you find any translation fails in the german translation, let me please know, since I am strongly involved in the german osTicket translation as translator/proofreader ;) and in case you are interested in helping with the translation let me know it too :)