You probably forgot to create the table wp_psnGallery. Please refer you to the install procedure

You probably forgot to define tags. Please refer you to the install procedure

You probably forgot to define mime-type. Please refer you to the install/upgrade procedure

Can't read the Coppermine configuration data

Warning: Cannot modify header information - headers already sent by (output started at /home/mingfai/www/blog/wp-content/plugins/psnGallery2.php:134) in /home/mingfai/www/blog/wp-includes/pluggable.php on line 1196