Brief
We have fixed the 'admin_upgrade.php' file for releases 3.4-3.4.5.
We have issued a patch for orders and users tables that should be applied after upgrade for all versions 3.4-3.4.5.
 
Description.
Country and state information in orders and users tables were mixed up after the upgrade.
 
Solution.
We would recommend to download an updated version of the file from here: http://www.viart.com/downloads/admin_upgrade-3.4.5.zip
 
Further, extract the above mentioned file into the 'admin' folder of your shop replacing an existing one. Don't forget to make a backup copy of the current file in case something goes wrong.
 
The patching script for mixed data is available here:
http://www.viart.com/downloads/va_fix_countries_states_id-3.4.zip
Then extract 'va_fix_countries_states_id.php' file into the root folder of the shop and run the below string in the web browser bar:
http://viart.example.com/va_fix_countries_states_id.php
Delete the script after successful run.
Don't forget to make a backup copy of the current database in case something goes wrong.