The short story:You need to update an image url field in a SharePoint list using REST and jQuery. If you just try to update the field directly using this syntax in the data part of the ajax query:'ImageField': 'http://myimage'You get this error message: 'PrimitiveValue' node was found when reading from the JSON reader. A 'StartObject' node was expectedInstead you need to use this syntax:'ImageField': {Url: 'http://myimage', Description: 'This is the description'}The full story:http://stackoverflow.... ......