>Hi Viv, I'm using the crude example ( your words ) in my app to manage a list of config classes and it works absolutely fine but one of the reasons for wanting a config file was to make it easy to change settings in a text file, and whilst I can change a setting ( being very careful using Notepad ) I don't feel comfortable letting users loose on the file as the Json serializer stores the text as one long line, is there a way of doing this so that each item in the list is serialized on a seperate line ?

Try:

JsonConvert.SerializeObject(xxx, Formatting.Indented);

(Top of my head, hope it's right :-} )