I updated but I found other warnings when I update a post, not sure if these existed before the update:
'Notice: Undefined index: _zm_sh_disable_share in /public_html/wp-content/plugins/html-social-share-buttons/metabox.php on line 87
Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-content/plugins/html-social-share-buttons/metabox.php:87) in /public_html/wp-admin/post.php on line 235
Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-content/plugins/html-social-share-buttons/metabox.php:87) in /public_html/wp-includes/pluggable.php on line 1196'


git-svn-id: https://plugins.svn.wordpress.org/html-social-share-buttons/tags/2.1.5.1@1189146 b8457f37-d9ea-0310-8a92-e5e31aec5664