I'm sure PSO2 will get a US version some time this century. Meanwhile there is a patch and this is the forum where you can discuss it and get help with issues.
I had that problem when I first finished updating, regardless of the patch being installed/not installed. Try doing a file check (third option in the launcher), it fixed it for me.
Run my launcher and set it up, go to options >> functions and there are some CRC options you can try out. Feel free to discuss your log files in my launcher thread.