Luke on "[Plugin: Contact Form DB] Error after update to Contact Form 7"

Not sure what's going on, but I deactivate Contact Form 7 and still get these errors. Deactivate the DB plugin and they go away. Haven't tried deleting and re-installing, don't want to lose the database data.

The plugin generated 957 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

Also get these errors:

WordPress database error: [Duplicate column name 'field_order']
ALTER TABLE <code>wp_cf7dbplugin_submits</code> ADD COLUMN <code>field_order</code> INTEGER

WordPress database error: [Duplicate column name 'file']
ALTER TABLE <code>wp_cf7dbplugin_submits</code> ADD COLUMN <code>file</code> LONGBLOB

WordPress database error: [Duplicate key name 'submit_time_idx']
ALTER TABLE <code>wp_cf7dbplugin_submits</code> ADD INDEX <code>submit_time_idx</code> ( <code>submit_time</code> )

WordPress database error: [Duplicate key name 'form_name_idx']
ALTER TABLE <code>wp_cf7dbplugin_submits</code> ADD INDEX <code>form_name_idx</code> ( <code>form_name</code> )

http://wordpress.org/extend/plugins/contact-form-7-to-database-extension/