More than 1 block - doesn't work

When increasing "Number of blocks to create" in ANF module settings the provided configurations are still limited to one block.
Error message: "The field you have picked in block 2 does not exist in the content types you have chosen."
See attached screenshot. I hope it is self explaining.

BTW: i like this substring ajax search and the way dynamic blocks are created for different parts of a drupal site.

cheers, Ronald