SQL errors

Hi,

I have installed all three modules (send, send_node and send_track) and I'm getting this SQL error on the email history section of any node (node/XX/send):

user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '= 7 ) count_alias' at line 3 query: SELECT COUNT(*) FROM (SELECT send.sid AS sid FROM boletin_send send WHERE .nid = 7 ) count_alias in /home/xxx/public_html/drupalsite/sites/all/modules/views/includes/view.inc on line 745.

Also, when try to use the send to friend functionality, after sending it shows the following error:

user warning: Table 'database.send_contact_mail' doesn't exist query: SELECT * FROM send_contact_mail WHERE scid = 1 in /home/xxx/public_html/drupalsite/sites/all/modules/send/includes/send.api.inc on line 226.

Note that my drupal installation uses a DB prefix on the tables.

Thanks,

yorch.