I'm using solspace importer (latest version) to import members in EE v2.10.1
In the importer settings form, I have a row Additional Member Fields There is a select where I can select custom fields and a button [Add field].
When I click the Add Field button I get this error :
An Error Was Encountered A Unique Field Element with valid EE Field Are Required.
I don't have a clue about what it means...
EDIT : In fact clicking that button submits the form while there are still blank fields. Is that a bug ?