I go to log in after install and get this error can someone advise thanks?

Fatal error: getauthconnection(): Failed opening required '/home/virtual/site5/fst/var/www/html/class/auth/auth_nl2br.php' (include_path='.:/php/includes:/usr/share/php') in /home/virtual/site5/fst/var/www/html/class/auth/authfactory.php on line 33
Warning [PHP]: getauthconnection(): Unable to access /home/virtual/site5/fst/var/www/html/class/auth/auth_nl2br.php in file class/auth/authfactory.php line 33
Warning [PHP]: getauthconnection(/home/virtual/site5/fst/var/www/html/class/auth/auth_nl2br.php): failed to open stream: No such file or directory in file class/auth/authfactory.php line 33

Ok I applied fix but get new error and have not found any info on it can someone please help?

Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /home/virtual/site5/fst/var/www/html/class/auth/authfactory.php on line 41

Fatal error: Undefined class name 'xoopsauthfactory' in /home/virtual/site5/fst/var/www/html/include/checklogin.php on line 48

Remove 2.2.3 (which is now 2.2.3 RC1) and
- try 2.2.2 or 2.2.3 RC2
(I'm too lazy to repeat all recipes from comments to news about 2.2.3)