oscommerce product attribute mysql error

**URGENT** I have a customers site going live in several hours but we have hit an error when we go into admin / product attributes. We get the following error: 1104 - The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET SQL_MAX_JOIN_SIZE=# if the SELECT is okay select pov.products_options_values_id, pov.products_options_values_name, pov2po.products_options_id from products_options_values pov left join products_options_values_to_products_options pov2po on pov.products_options_values_id = pov2po.products_options_values_id where pov.language_id = '1' order by pov.products_options_values_id I guess this is a mysql 5 problem as the webhost is php / mysql 5 and my test sever has mysql / php 4 The oscommerce version is MS2.2 latest snapshot I need this done ASAP I can send over the database if required