Following upgrade to v1.51 I get the following error:

PHP Fatal error: 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'int)PRODUCTS_OPTIONS_VALUES_TEXT_ID, 1, 'TEXT')' at line 1 :: INSERT INTO products_options_values (products_options_values_id, language_id, products_options_values_name) VALUES ((int)PRODUCTS_OPTIONS_VALUES_TEXT_ID, 1, 'TEXT') in /home/myserver/public_html/mydomain.com/includes/classes/db/mysql/query_factory.php on line 120

when accessing either:

attributes controller
option names manager
option values manager

If I temporarily use the v1.50 php files for these 3 sources the problem does not occur. Looking at the difference between the two versions I think that v1.51 is checking for and finding errors in the database that v1.50 could not.

Any clue to where I should be looking is appreciated.