The selected file /tmp/fileHWhWmX could not be uploaded, because the destination sites/default/files/css/css_a91cd284035e73ba34d112bfed2f5a16.css is not properly configured.
  The selected file /tmp/filecoFZdK could not be uploaded, because the destination sites/default/files/css/css_de1aa27776f1462d2b0d83a80ce4b92d.css is not properly configured.

This setting opens an Action Manager page where you can set up a series of evaluations, the result of which determines which Field is shown (see Evaluated Field for more information).

When checked, the label of the Field which is shown is used instead of the evaluated Field's label. This setting only applies to evaluated Fields shown in a Field Grid.

Note: This setting overrides any local Field label which might be set.