When attempting to map a field into a nuPickers data type I get the following error.

 2017-05-02 10:16:55,054 [P15892/D4/T412] ERROR
 CMSImportLibrary.Providers.ImportProviders.Content.ContentImportProvider - CMSImport:A record failed to import for aliasauthor
 System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
    at System.ThrowHelper.ThrowKeyNotFoundException()
    at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
    at CMSImport.FieldProviders.NuPicker.Config.XmlPickerConfig.InitializeConfig(PropertyInfo property)
    at CMSImport.FieldProviders.NuPicker.NuPickersXmlFieldProvider.Parse(Object value, PropertyInfo property, FieldProviderOptions fieldProviderOptions)
    at CMSImportLibrary.Providers.FieldProviders.FieldProviderFactory.Parse(PropertyInfo prop, Object value, FieldProviderOptions fieldProviderOptions)
    at CMSImportLibrary.Providers.ImportProviders.Content.ContentImportProvider.(ImportActions , IContent , Dictionary`2 , AdvancedSettingFieldOptions, PropertyInfo , Object , ImportState , Boolean&  )
    at CMSImportLibrary.Providers.ImportProviders.Content.ContentImportProvider.(ImportState , Int32 , ImportStatistics , String)

Have the two configs gone out of sync and the library needs updating?