// Create imprint data table
addExtensionSql("DROP TABLE IF EXISTS `{?_MYSQL_PREFIX?}_imprint_data`");
addExtensionSql("CREATE TABLE `{?_MYSQL_PREFIX?}_imprint_data` (
-`imprint_id` BIGINT(20) NOT NULL AUTO_INCREMENT,
+`imprint_id` BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
`imprint_key` VARCHAR(255) NOT NULL DEFAULT '',
`imprint_value` VARCHAR(255) NOT NULL DEFAULT '',
UNIQUE (`imprint_key`),