Thanks, Alan, for Widget Logic internationalization. This new feature makes your plugin an invaluable piece for any WordPress installation. I know that most WordPress users are not comfortable with conditional tags, but once understood the way they work, they are incredibly powerful.
Here you have the spanish translation, which includes all text chains in version 0.54. I would be very grateful if you include it in version 0.54 when this is definitely released.
By the way, I've updated version 0.54 with the patch proposed by philibertperusse (http://wordpress.org/support/topic/error-after-widget-logic-upgrade), and it works fine.