I have upgraded to 1.3.1 for a client, all seems ok, except for error messages when I login, these error messages were also there before the upgrade.
I beleive this is preventing Smart SEO from working:
Notice: Use of undefined constant _UE_UNNAMED_USER - assumed '_UE_UNNAMED_USER' in /home/sites/mysite.co.uk/public_html/administrator/components/com_comprofiler/comprofiler.class.php on line 1155
Notice: Use of undefined constant _UE_UNNAMED_USER - assumed '_UE_UNNAMED_USER' in /home/sites/mysite.co.uk/public_html/administrator/components/com_comprofiler/comprofiler.class.php on line 1155
Notice: Use of undefined constant _UE_UNNAMED_USER - assumed '_UE_UNNAMED_USER' in /home/sites/mysite.co.uk/public_html/administrator/components/com_comprofiler/comprofiler.class.php on line 1155