We're using version 5.2.0.0 and have a people picker field which allows for multiple users to be entered. When trying to use that field in the To section of an email in a Nintex Workflow we are getting the error message: "Coercion Failed: Input cannot be null for this coercion." Have tried setting a variable equal to the field as a string, display name, email address, login name and user ID and none of them have worked. Also tried updating another column within the same list to the main column just to see what value might be returned and after the workflow ran the field didn't update to show the people listed in the people picker column. Unsure as to why this functionality isn't working since it has worked previously and seems to work fine when the people picker field doesn't allow multiple users to be entered.