Thanks.
I had this error until this moment in "Layout and options" (in the admin panel), and I fixed replacing this line in smf.php (the Orstio solution)
$nqsefurl = substr($nonsefurl, 0, strpos($nonsefurl, 'option')) . preg_replace('/(\;)([^=#]*)([#"])/', '$1$2=$2$3', substr($nonsefurl, strpos($nonsefurl, 'option'), strlen($nonsefurl)));
by
$nqsefurl = substr($nonsefurl, 0, strpos($nonsefurl, 'option')) . preg_replace('/(\;)([^=#]*)([\;#"])/', '$1$2=$2$3', substr($nonsefurl, strpos($nonsefurl, 'option'), strlen($nonsefurl)));
The com_smf version is 1.1.7, I updated it today and this code line isn't fixed.