Thank you mc12345678
I installed the module you mentioned. Below are the new debug files. I checked all files mentioned to be sure they are 1.5.1 original. So far I am stumped. This cart was upgraded from 1.3.7 in 2012. I'm waiting to hear back as to how long this problem has been going on and what possible work or changes had been done just prior.
[11-Dec-2014 21:49:55 America/Los_Angeles] #1 trigger_error() called at [/home/user/public_html/cart/includes/classes/db/mysql/query_factory.php:120]
#2 queryFactory->show_error() called at [/home/user/public_html/cart/includes/classes/db/mysql/query_factory.php:105]
#3 queryFactory->set_error() called at [/home/user/public_html/cart/includes/classes/db/mysql/query_factory.php:227]
#4 queryFactory->Execute() called at [/home/user/public_html/cart/includes/functions/audience.php:42]
#5 get_audiences_list() called at [/home/user/public_html/cart/user-admin/email_export.php:276]
[11-Dec-2014 21:49:55 America/Los_Angeles] PHP Fatal error: 1146:Table 'user_zencart.TABLE_ORDERS' doesn't exist :: select o.date_purchased, c.customers_email_address, c.customers_lastname, c.customers_firstname from zen_customers c,
TABLE_ORDERS o WHERE c.customers_id = o.customers_id AND c.customers_newsletter = 1 GROUP BY c.customers_email_address HAVING
max(o.date_purchased) <= subdate(now(),INTERVAL 3 MONTH) ORDER BY c.customers_lastname, c.customers_firstname ASC in /home/user/public_html/cart/includes/classes/db/mysql/query_factory.php on line 120
[11-Dec-2014 21:49:38 America/Los_Angeles] #1 trigger_error() called at [/home/user/public_html/cart/includes/classes/db/mysql/query_factory.php:120]
#2 queryFactory->show_error() called at [/home/user/public_html/cart/includes/classes/db/mysql/query_factory.php:105]
#3 queryFactory->set_error() called at [/home/user/public_html/cart/includes/classes/db/mysql/query_factory.php:227]
#4 queryFactory->Execute() called at [/home/user/public_html/cart/includes/functions/audience.php:42]
#5 get_audiences_list() called at [/home/user/public_html/cart/user-admin/includes/modules/newsletters/newsletter.php:32]
#6 newsletter->choose_audience() called at [/home/user/public_html/cart/user-admin/newsletters.php:308]
[11-Dec-2014 21:49:38 America/Los_Angeles] PHP Fatal error: 1146:Table 'user_zencart.TABLE_ORDERS' doesn't exist :: select o.date_purchased, c.customers_email_address, c.customers_lastname, c.customers_firstname from zen_customers c,
TABLE_ORDERS o WHERE c.customers_id = o.customers_id AND c.customers_newsletter = 1 GROUP BY c.customers_email_address HAVING
max(o.date_purchased) <= subdate(now(),INTERVAL 3 MONTH) ORDER BY c.customers_lastname, c.customers_firstname ASC in /home/user/public_html/cart/includes/classes/db/mysql/query_factory.php on line 120