Update to MySQL 5.5.x. and the error wysiwyg

[nerbert]

previewing posts
Warning: preg_match(): Compilation failed: invalid range in character class at offset 23 in ..../includes/class_wysiwygparser.php on line 481
includes/class_wysiwygparser.php

Line 481

find

if (preg_match('#attachment.php\?attachmentid=(\d+)#si', $img_url, $matches) AND preg_match('#class=(\'|"|)([a-z0-9_-\s]+)?\s*previewthumb\s*([a-z0-9_-\s]+)?(\\1)#si', $fullurl))

replace with

if (preg_match('#attachment\.php\?attachmentid=(\d+)#si', $img_url, $matches) AND preg_match('#class=(\'|"|)([a-z0-9_\-\s]+)?\s*previewthumb\s*([a-z0-9_\-\s]+)?(\\1)#si', $fullurl))