I recently upgraded to WPMU 2.8.2. Now while editing the comment, when I click Update comment; I get this error:
Warning: array_merge() [function.array-merge]: Argument #1 is not an array in /home/xxxxx/public_html/wp-includes/comment.php on line 1097
Warning: Cannot modify header information - headers already sent by (output started at /home/xxxxx/public_html/wp-includes/comment.php:1097) in /home/xxxxx/public_html/wp-includes/pluggable.php on line 865
I checked those files on that line mentioned in the error and here is what was there:
LINE 1097 IN COMMENT.PHP FILE:
$commentarr = array_merge($comment, $commentarr);
LINE 865 in PLUGGABLE.PHP FILE
I checked the codex and the WPMU forums, but can't find a fix. Could it be multi-db causing this?