試してみました。

▼▼▼ デバッグ情報ここから ▼▼▼
http://www.image8298.jp/mieux/shop/admin/products/product_class.php?

SERVER_ADDR: 172.17.0.138
REMOTE_ADDR: 118.9.24.183
USER_AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.79 Safari/537.4

Fatal error(E_USER_ERROR): DB処理でエラーが発生しました。
SQL: [PREPARE mdb2_statement_mysql_92f396110572cbe368ab7679dfe494b7a47dd75760 FROM 'INSERT INTO dtb_products_class(classcategory_id1,classcategory_id2,product_code,stock,price01,product_type_id,down_filename,down_realfilename,product_id,sale_limit,deliv_fee,point_rate,stock_unlimited,price02,creator_id,update_date,del_flg,create_date,product_class_id) SELECT ?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,CURRENT_TIMESTAMP,?,CURRENT_TIMESTAMP,?']
PlaceHolder: [array (
0 => NULL,
1 => NULL,
2 => NULL,
3 => NULL,
4 => NULL,
5 => 0,
6 => NULL,
7 => '',
8 => '60',
9 => NULL,
10 => NULL,
11 => '1',
12 => 0,
13 => 0,
14 => '2',
15 => 1,
16 => 1985,
)]
MDB2 Error: constraint violation
_doQuery: [Error message: Could not execute statement]
[Last executed query: EXECUTE mdb2_statement_mysql_92f396110572cbe368ab7679dfe494b7a47dd75760 USING @0, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10, @11, @12, @13, @14, @15, @16]
[Native code: 1062]
[Native message: Duplicate entry '60-0-0' for key 'product_id']
on [/home/users/1/lolipop.jp-image8298/web/mieux/data/class/SC_Query.php(1008)]
/home/users/1/lolipop.jp-image8298/web/mieux/shop/admin/products/product_class.php(34): LC_Page_Admin_Products_ProductClass_Ex->process
/home/users/1/lolipop.jp-image8298/web/mieux/data/class_extends/page_extends/admin/products/LC_Page_Admin_Products_ProductClass_Ex.php(56): LC_Page_Admin_Products_ProductClass->process
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/pages/admin/products/LC_Page_Admin_Products_ProductClass.php(63): LC_Page_Admin_Products_ProductClass->action
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/pages/admin/products/LC_Page_Admin_Products_ProductClass.php(148): LC_Page_Admin_Products_ProductClass->registerProductClass
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/pages/admin/products/LC_Page_Admin_Products_ProductClass.php(284): SC_Query->insert
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/SC_Query.php(530): SC_Query->query
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/SC_Query.php(814): SC_Query->execute
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/SC_Query.php(971): SC_Query->error
/home/users/1/lolipop.jp-image8298/web/mieux/data/class/SC_Query.php(1008): trigger_error
▲▲▲ デバッグ情報ここまで ▲▲▲


ご教授下さいませ。