carazo on "[Plugin: NextGEN Gallery] Invalid display type"

I get this error in a WP Multisite installation:
array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } } array(1) { ["display_type"]=> array(1) { [0]=> string(20) "Invalid display type" } }

I have just updated to NextGen 2.0 and to WP 3.6.

http://wordpress.org/plugins/nextgen-gallery/