Hi lat9,

Thanks for taking an interest, and I will download and start using myDebug backtrace plugin.

the code preceding, and including line 73 is as follows:
Code:
$where_array = array();
if ($cat != '') {
    $where_array[] = " master_categories_id = '".$cat."' ";
}
if ($status != ''){
    $where_array[] = " products_status = '".$status."' ";
}
if ($mfg != ''){
    $where_array[] = " manufacturers_id = '".$mfg."' ";
}
if(count($where_array) > 0){
    $db_category_where = " WHERE ".explode(" AND ", $where_array);
}
else{
    $db_category_where = '';
}
Line 73 is

Code:
    $db_category_where = " WHERE ".explode(" AND ", $where_array);
near the bottom.

I can see a reference to manufacturer above, which is what led me to try adding a manufacturer to one of my products, to see if it made a difference.

Appreciate your input / thoughts.

Tim
TDK APDC