searchindex fails after upgrade to 5.1.3

[awmian]

Hi All,

We are testing upgrade, the whole process went smooth, after upgrade when we try to rebuild search indexes, It throws following error.

root@vb5 core]# php -f searchindex.php
Please enter the path to your vBulletin directory (default ): /var/www/html
PHP Warning: require_once(./global.php): failed to open stream: No such file or directory in /var/www/html/core/searchindex.php on line 104
PHP Fatal error: require_once(): Failed opening required './global.php' (include_path='.:/usr/share/pear:/usr/share/php') in /var/www/html/core/searchindex.php on line 104

Will much appreciate any help.

Thanks

AWM