Problem with editing a article

hmmm it's standard teamplay from hotstart


I change now a language for english

The articles are saved normally.

Please choose a category "properties" - where offers must be saved because then they appear in the boxes on front page 
Or edit some article with a real estate offer
Simply article any category are saving

It works as well. 

I open your article " Land for Building near Wilmingto " just push a SAVE and get and error

Does it work when you log in to administrator in the English language?