Title: Upgrade Last modified: August 21, 2016 --- # Upgrade * Resolved [Emilien](https://wordpress.org/support/users/milouze/) * (@milouze) * [12 years, 3 months ago](https://wordpress.org/support/topic/upgrade-50/) * Hello, * Idea : exemple for multi email list (i search & i test = complicated) * I have some big bug and i am come back to 3.8 the error report when a commentaire it is send and no email to the list email: * Warning: array_merge(): Argument #2 is not an array in /wp-content/plugins/cbnet- multi-author-comment-notification/cbnet-multi-author-comment-notification.php on line 114 * Warning: array_unique() expects parameter 1 to be array, null given in /wp-content/ plugins/cbnet-multi-author-comment-notification/cbnet-multi-author-comment-notification. php on line 118 * Warning: array_merge(): Argument #2 is not an array in /wp-content/plugins/cbnet- multi-author-comment-notification/cbnet-multi-author-comment-notification.php on line 141 * Warning: array_unique() expects parameter 1 to be array, null given in /wp-content/ plugins/cbnet-multi-author-comment-notification/cbnet-multi-author-comment-notification. php on line 141 * Warning: Invalid argument supplied for foreach() in wp-includes/pluggable.php on line 1242 * Warning: Cannot modify header information – headers already sent by (output started at /wp-content/plugins/cbnet-multi-author-comment-notification/cbnet-multi-author- comment-notification.php:114) in /wp-includes/comment.php on line 679 * Warning: Cannot modify header information – headers already sent by (output started at /wp-content/plugins/cbnet-multi-author-comment-notification/cbnet-multi-author- comment-notification.php:114) in wp-includes/comment.php on line 680 * Warning: Cannot modify header information – headers already sent by (output started at /wp-content/plugins/cbnet-multi-author-comment-notification/cbnet-multi-author- comment-notification.php:114) in wp-includes/comment.php on line 681 * Warning: Cannot modify header information – headers already sent by (output started at /wp-content/plugins/cbnet-multi-author-comment-notification/cbnet-multi-author- comment-notification.php:114) in /wp-includes/pluggable.php on line 896 * [https://wordpress.org/plugins/cbnet-multi-author-comment-notification/](https://wordpress.org/plugins/cbnet-multi-author-comment-notification/) Viewing 5 replies - 1 through 5 (of 5 total) * [ModestCraft](https://wordpress.org/support/users/modestcraft/) * (@modestcraft) * [12 years, 3 months ago](https://wordpress.org/support/topic/upgrade-50/#post-4647355) * Hey Milouze, * I ran into the same problem. For me it was a plugin conflict with Bad Behaviour. I solved it by turning bad behaviour off as commenting was more important to me. I’m looking into how they both can play nice together. * [basilsblog](https://wordpress.org/support/users/basilsblog/) * (@basilsblog) * [12 years, 3 months ago](https://wordpress.org/support/topic/upgrade-50/#post-4647367) * I’m running into the same problem with the plugin. Only, I’m thinking in my situation, it’s not a conflict with other plugins. I’ve completely disabled all plugins ( even Akismet), and the issue remains. Confirming that the only plugin activates is the multi-author-comment one, and it gives the same error message when someone submits a comment. * Anyone have any suggestions? * > Warning: array_merge() [function.array-merge]: Argument #2 is not an array > in /home/imao/public_html/wp-content/plugins/cbnet-multi-author-comment-notification/ > cbnet-multi-author-comment-notification.php on line 114 > Warning: array_unique() expects parameter 1 to be array, null given in /home/ > imao/public_html/wp-content/plugins/cbnet-multi-author-comment-notification/ > cbnet-multi-author-comment-notification.php on line 118 > Warning: array_merge() [function.array-merge]: Argument #2 is not an array > in /home/imao/public_html/wp-content/plugins/cbnet-multi-author-comment-notification/ > cbnet-multi-author-comment-notification.php on line 141 > Warning: array_unique() expects parameter 1 to be array, null given in /home/ > imao/public_html/wp-content/plugins/cbnet-multi-author-comment-notification/ > cbnet-multi-author-comment-notification.php on line 141 > Warning: Invalid argument supplied for foreach() in /home/imao/public_html/ > wp-includes/pluggable.php on line 1242 > Warning: Cannot modify header information – headers already sent by (output > started at /home/imao/public_html/wp-content/plugins/cbnet-multi-author-comment- > notification/cbnet-multi-author-comment-notification.php:114) in /home/imao/ > public_html/wp-includes/comment.php on line 679 > Warning: Cannot modify header information – headers already sent by (output > started at /home/imao/public_html/wp-content/plugins/cbnet-multi-author-comment- > notification/cbnet-multi-author-comment-notification.php:114) in /home/imao/ > public_html/wp-includes/comment.php on line 680 > Warning: Cannot modify header information – headers already sent by (output > started at /home/imao/public_html/wp-content/plugins/cbnet-multi-author-comment- > notification/cbnet-multi-author-comment-notification.php:114) in /home/imao/ > public_html/wp-includes/comment.php on line 681 > Warning: Cannot modify header information – headers already sent by (output > started at /home/imao/public_html/wp-content/plugins/cbnet-multi-author-comment- > notification/cbnet-multi-author-comment-notification.php:114) in /home/imao/ > public_html/wp-includes/pluggable.php on line 896 * Rolling back to an older version (I had 2.2.1 lying around) is my current work- around. But, I’d love to see a solution. * Plugin Author [Chip Bennett](https://wordpress.org/support/users/chipbennett/) * (@chipbennett) * [12 years, 3 months ago](https://wordpress.org/support/topic/upgrade-50/#post-4647369) * Can you tell me what your Plugin settings are? Also: what version of WordPress are you using, and what other Plugins do you have active? * [basilsblog](https://wordpress.org/support/users/basilsblog/) * (@basilsblog) * [12 years, 3 months ago](https://wordpress.org/support/topic/upgrade-50/#post-4647370) * With all plugins disabled (all, each and every one) and WordPress 3.8.1 * Plugin Author [Chip Bennett](https://wordpress.org/support/users/chipbennett/) * (@chipbennett) * [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-50/#post-4647384) * Hi all. I just committed version 3.2 of the Plugin, which should address this issue. Please let me know if you find any other issues. Thanks! Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘Upgrade’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/cbnet-multi-author-comment-notification. svg) * [cbnet Multi Author Comment Notification](https://wordpress.org/plugins/cbnet-multi-author-comment-notification/) * [Frequently Asked Questions](https://wordpress.org/plugins/cbnet-multi-author-comment-notification/#faq) * [Support Threads](https://wordpress.org/support/plugin/cbnet-multi-author-comment-notification/) * [Active Topics](https://wordpress.org/support/plugin/cbnet-multi-author-comment-notification/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/cbnet-multi-author-comment-notification/unresolved/) * [Reviews](https://wordpress.org/support/plugin/cbnet-multi-author-comment-notification/reviews/) * 5 replies * 4 participants * Last reply from: [Chip Bennett](https://wordpress.org/support/users/chipbennett/) * Last activity: [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-50/#post-4647384) * Status: resolved