I am having a problem directly after upgrading. Where posts should be it gives me the following error:
Warning: preg_replace() [function.preg-replace]:Empty regular expression in /home/******/******/blog/******/wp-includes/formatting.php on line 668
I looked in formatting.php on line 668 and saw:
$content = preg_replace($wp_smiliessearch, $wp_smiliesreplace, $content);
Any help on this issue would be much appreciated!