Problem updating to 1.8.8
 

Hello,
I tried to upgrade the script to 1.8.8 version. Then I try to reindex all URLs listed in file list.txt via SSH.
I use the command:

php -f /home/****/public_html/admin/spider.php /home/****/public_html/list.txt >> /home/****/public_html/spider.log &

It starts but in spider.log it return me this error:

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/****/public_html/admin/robot_functions.php on line 119

Howw can I fix it?

Thank you