Parse error: syntax error, unexpected T_DNUMBER in /home/soft1536/public_html/farm/pmwiki.php(1507) : regexp code on line 1

Fatal error: preg_replace() [<a href='function.preg-replace'>function.preg-replace</a>]: Failed evaluating code: NoGroupTitle(BlogComments.2006-01-22-BlogGroups) in /home/soft1536/public_html/farm/pmwiki.php on line 1507