WPML Admin text help.

[tw2113]

Add to this line: https://github.com/WebDevStudios/custom-post-type-ui/blame/1.18.2/custom-post-type-ui.php#L396

$slug      = isset( $post_type['name'] ) ? $post_type['name'] : '';
$text_name  = '[cptui_post_types][' . $slug . '][labels]' . $key; 
$label = apply_filters( 'wpml_translate_single_string', $label, 'admin_texts_cptui_post_types', $text_name ); 

Consider checking for WPML first, even though if not available, the apply_filters shouldn't do anything.

[tw2113]

See 1015/wpml-improved-support. We require the name field so we should always have that by the time we get to this spot of registration.