I've installed wpmu, but get the following errors showing:
Notice: Constant ABSPATH already defined in /var/www/vhosts/wpmu-stable-1_5_1_3/wp-inst/wp-includes/class-smarty.php on line 6
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/wpmu-stable-1_5_1_3/wp-inst/wp-includes/class-smarty.php:6) in /var/www/vhosts/wpmu-stable-1_5_1_3/wp-inst/wp-admin/install.php on line 15
Ideas on how to fix?