Primary key errors after update.php (update 6000)

The following queries were executed
uc_flatrate module
Update #6000

* ALTER TABLE {uc_flatrate_products} DROP PRIMARY KEY
* ALTER TABLE {uc_flatrate_products} CHANGE vid `vid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_flatrate_products} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_flatrate_products} CHANGE mid `mid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_flatrate_products} ADD PRIMARY KEY (vid, mid)
* Failed: ALTER TABLE {uc_flatrate_methods} DROP PRIMARY KEY
* Failed: ALTER TABLE {uc_flatrate_methods} CHANGE mid `mid` INT unsigned NOT NULL auto_increment, ADD PRIMARY KEY (mid)

uc_quote module
Update #6000

* ALTER TABLE {uc_quote_shipping_types} DROP PRIMARY KEY
* ALTER TABLE {uc_quote_shipping_types} CHANGE id `id` INT unsigned NOT NULL DEFAULT 0, ADD PRIMARY KEY (id_type, id)
* ALTER TABLE {uc_quote_manufacturer_locations} DROP PRIMARY KEY
* ALTER TABLE {uc_quote_manufacturer_locations} CHANGE tid `tid` INT unsigned NOT NULL DEFAULT 0, ADD PRIMARY KEY (tid)
* ALTER TABLE {uc_quote_product_locations} DROP PRIMARY KEY
* ALTER TABLE {uc_quote_product_locations} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0, ADD PRIMARY KEY (nid)
* ALTER TABLE {uc_order_quotes} DROP KEY oid_quote_method
* ALTER TABLE {uc_order_quotes} CHANGE oid `order_id` INT unsigned NOT NULL DEFAULT 0, ADD UNIQUE KEY order_id_quote_method (order_id, method)

uc_attribute module
Update #6000

* ALTER TABLE {uc_attributes} CHANGE aid `aid` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_attributes} CHANGE required `required` TINYINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_attributes} CHANGE display `display` TINYINT unsigned NOT NULL DEFAULT 1
* ALTER TABLE {uc_attribute_options} CHANGE aid `aid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_attribute_options} CHANGE oid `oid` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_class_attributes} DROP PRIMARY KEY
* ALTER TABLE {uc_class_attributes} CHANGE aid `aid` INT unsigned NOT NULL DEFAULT 0, ADD PRIMARY KEY (pcid, aid)
* ALTER TABLE {uc_class_attributes} CHANGE default_option `default_option` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_class_attributes} CHANGE required `required` TINYINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_class_attributes} CHANGE display `display` TINYINT unsigned NOT NULL DEFAULT 1
* ALTER TABLE {uc_class_attribute_options} DROP PRIMARY KEY
* ALTER TABLE {uc_class_attribute_options} CHANGE oid `oid` INT unsigned NOT NULL DEFAULT 0, ADD PRIMARY KEY (pcid, oid)
* ALTER TABLE {uc_product_attributes} DROP PRIMARY KEY
* ALTER TABLE {uc_product_attributes} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_product_attributes} CHANGE aid `aid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_product_attributes} CHANGE default_option `default_option` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_product_attributes} CHANGE required `required` TINYINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_product_attributes} CHANGE display `display` TINYINT unsigned NOT NULL DEFAULT 1
* ALTER TABLE {uc_product_attributes} ADD PRIMARY KEY (nid, aid)
* ALTER TABLE {uc_product_options} DROP PRIMARY KEY
* ALTER TABLE {uc_product_options} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_product_options} CHANGE oid `oid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_product_options} ADD PRIMARY KEY (nid, oid)
* Failed: ALTER TABLE {uc_product_adjustments} DROP PRIMARY KEY
* ALTER TABLE {uc_product_adjustments} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0, ADD INDEX nid (nid)

uc_cart module
Update #6000

* ALTER TABLE {uc_cart_products} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_cart_products} CHANGE qty `qty` SMALLINT unsigned NOT NULL DEFAULT 0

uc_order module
Update #6000

* Failed: ALTER TABLE {uc_orders} DROP PRIMARY KEY
* Failed: ALTER TABLE {uc_orders} DROP INDEX uid
* Failed: ALTER TABLE {uc_orders} CHANGE order_id `order_id` INT unsigned NOT NULL auto_increment, ADD PRIMARY KEY (order_id)
* ALTER TABLE {uc_orders} CHANGE uid `uid` INT unsigned NOT NULL DEFAULT 0, ADD INDEX uid (uid)
* ALTER TABLE {uc_orders} CHANGE delivery_first_name `delivery_first_name` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_last_name `delivery_last_name` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_phone `delivery_phone` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_company `delivery_company` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_street1 `delivery_street1` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_street2 `delivery_street2` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_city `delivery_city` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_zone `delivery_zone` MEDIUMINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_orders} CHANGE delivery_postal_code `delivery_postal_code` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE delivery_country `delivery_country` MEDIUMINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_orders} CHANGE billing_first_name `billing_first_name` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_last_name `billing_last_name` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_phone `billing_phone` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_company `billing_company` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_street1 `billing_street1` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_street2 `billing_street2` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_city `billing_city` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_zone `billing_zone` MEDIUMINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_orders} CHANGE billing_postal_code `billing_postal_code` VARCHAR(255) NOT NULL DEFAULT ''
* ALTER TABLE {uc_orders} CHANGE billing_country `billing_country` MEDIUMINT unsigned NOT NULL DEFAULT 0
* Failed: ALTER TABLE {uc_order_admin_comments} DROP INDEX order_id
* ALTER TABLE {uc_order_admin_comments} CHANGE comment_id `comment_id` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_order_admin_comments} CHANGE order_id `order_id` INT unsigned NOT NULL DEFAULT 0, ADD INDEX order_id (order_id)
* ALTER TABLE {uc_order_admin_comments} CHANGE uid `uid` INT unsigned NOT NULL DEFAULT 0
* Failed: ALTER TABLE {uc_order_comments} DROP INDEX order_id
* ALTER TABLE {uc_order_comments} CHANGE comment_id `comment_id` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_order_comments} CHANGE order_id `order_id` INT unsigned NOT NULL DEFAULT 0, ADD INDEX order_id (order_id)
* ALTER TABLE {uc_order_comments} CHANGE uid `uid` INT unsigned NOT NULL DEFAULT 0
* Failed: ALTER TABLE {uc_order_line_items} DROP INDEX order_id
* ALTER TABLE {uc_order_line_items} CHANGE line_item_id `line_item_id` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_order_line_items} CHANGE order_id `order_id` INT unsigned NOT NULL DEFAULT 0, ADD INDEX order_id (order_id)
* Failed: ALTER TABLE {uc_order_log} DROP INDEX order_id
* ALTER TABLE {uc_order_log} CHANGE order_log_id `order_log_id` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_order_log} CHANGE order_id `order_id` INT unsigned NOT NULL DEFAULT 0, ADD INDEX order_id (order_id)
* ALTER TABLE {uc_order_log} CHANGE uid `uid` INT unsigned NOT NULL DEFAULT 0
* Failed: ALTER TABLE {uc_order_products} DROP INDEX order_id
* ALTER TABLE {uc_order_products} CHANGE order_product_id `order_product_id` INT unsigned NOT NULL auto_increment
* ALTER TABLE {uc_order_products} CHANGE order_id `order_id` INT unsigned NOT NULL DEFAULT 0, ADD INDEX order_id (order_id)
* ALTER TABLE {uc_order_products} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_order_products} CHANGE qty `qty` SMALLINT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_order_products} CHANGE cost `cost` DECIMAL unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_order_products} CHANGE price `price` DECIMAL unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_order_products} CHANGE weight `weight` FLOAT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_order_statuses} CHANGE weight `weight` SMALLINT NOT NULL DEFAULT 0
* ALTER TABLE {uc_order_statuses} CHANGE locked `locked` TINYINT unsigned NOT NULL DEFAULT 0

uc_product module
Update #6000

* Failed: ALTER TABLE {uc_product_features} DROP PRIMARY KEY
* Failed: ALTER TABLE {uc_product_features} DROP INDEX nid
* Failed: ALTER TABLE {uc_product_features} CHANGE pfid `pfid` INT unsigned NOT NULL auto_increment, ADD PRIMARY KEY (pfid)
* ALTER TABLE {uc_product_features} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0, ADD INDEX nid (nid)
* ALTER TABLE {uc_products} DROP PRIMARY KEY
* ALTER TABLE {uc_products} CHANGE vid `vid` INT unsigned NOT NULL DEFAULT 0, ADD PRIMARY KEY (vid)
* ALTER TABLE {uc_products} CHANGE nid `nid` INT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_products} CHANGE list_price `list_price` DECIMAL unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_products} CHANGE cost `cost` DECIMAL unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_products} CHANGE sell_price `sell_price` DECIMAL unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_products} CHANGE weight `weight` FLOAT unsigned NOT NULL DEFAULT 0
* ALTER TABLE {uc_products} CHANGE unique_hash `unique_hash` VARCHAR(32) NOT NULL DEFAULT 'd41d8cd98f00b204e9800998ecf8427e'
* ALTER TABLE {uc_products} CHANGE shippable `shippable` TINYINT unsigned NOT NULL DEFAULT 1

uc_store module
Update #6000

* Failed: ALTER TABLE {uc_countries} DROP PRIMARY KEY
* Failed: ALTER TABLE {uc_countries} CHANGE country_id `country_id` INT unsigned NOT NULL auto_increment, ADD PRIMARY KEY (country_id)
* Failed: ALTER TABLE {uc_zones} DROP PRIMARY KEY
* Failed: ALTER TABLE {uc_zones} DROP INDEX zone_country_id
* Failed: ALTER TABLE {uc_zones} CHANGE zone_id `zone_id` INT unsigned NOT NULL auto_increment, ADD PRIMARY KEY (zone_id)
* ALTER TABLE {uc_zones} CHANGE zone_country_id `zone_country_id` INT unsigned NOT NULL DEFAULT 0, ADD INDEX zone_country_id (zone_country_id)