Disappointing. Does not work.

I have attempted to use this app several times. Ive downloaded, installed, deleted and reinstalled it. Ive done everything I can to get it to work. No matter what I do, I get error messages: "Fehler: The operation couldnt be completed. (Exception on didEndElement: *** setObjectForKey: key cannot be nil error 0.)" or "Fehler: 20 DB_ERROR" I am unable to add content. Please fix this. Fixed, it would be a fantastic app to have.

Geneva1977 about Deutsch Vokabeltrainer