Hi, zeezhao,

Hmmm... The symptoms you describe might occur if you didn't uninstall the old uc_addresses module. You have to disable the module and then run the Uninstall procedure to delete the old uc_addresses table. If you still have the old addresses, then this indicates that either you didn't run the uninstall or that the old uc_addresses module does not properly delete its table.

One way of correcting the problem:

1. Disable the uc_addresses module.
2. Uninstall it. Ignore any errors.
3. Using a tool such as phpmysqladmin, verify that the uc_addresses and uc_addresses_defaults tables are gone. If not, delete (DROP) the tables.
4. Re-enable the module. You should get some messages about the tables being created.
5. Use phpmysqladmin and verify that you have two new tables: uc_addresses and uc_addresses_defaults and that both tables are empty.

Let me know if any problems still remain, particularly the zone problem.