As long as you files are saved and the page is delivered with an encoding that supports german umlauts like "Ü" ( utf-8 for example), everything is fine. If so, and Aptana studio still shows an error, it's a bug in Aptana studio.
Workaround for this, if your url is in english.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.