I am trying to upgrade magento 126.96.36.199 to 188.8.131.52 but I am getting the following error every time. I tried going to 1.6.2 as a test but having the same issue:
Error in file: "/app/code/core/Mage/Core/sql/core_setup/mysql4-upgrade-184.108.40.206-220.127.116.11.php" - SQLSTATE: Syntax error or access violation: 1171 All parts of a PRIMARY KEY must be NOT NULL; if you need NULL in a key, use UNIQUE instead
I've run the DB repair script against a vanilla 18.104.22.168 and all is fine.
Has anyone come across this issue before?