Tell us what you are trying to do?
Im deleting images from the media library and get this error message:
Error in deleting.
Warning: array_key_exists(): The first argument should be either a string or an integer in /home/aregarden/sites/staging2/wp-content/plugins/sitepress-multilingual-cms/inc/post-translation/wpml-post-synchronization.class.php on line 60
If I upload an new image to the media library I can delete it without any errors but if I delete an older image I get this error.