Magento upgrade (1.5.1 to 1.6.2) error

Hello, I have made an upagrade on test store ([login to view URL]) from magento 1.5.1 to magento 1.6.2. Unfortunately, I get an error when trying to access home page : a:5:{i:0;s:308:"Error in file: "/test_store/app/code/core/Mage/Admin/sql/admin_setup/[login to view URL]" - SQLSTATE[HY000]: General error: 1293 Incorrect table definition; there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause";i:1;s:1214:"#0 /var/www/vhosts/[login to view URL](645): Mage::exception('Mage_Core', 'Error in file: ...') ( I can send you entire file report) You must be experienced with magento (magento jobs on getafreelancer) to make a bid.