All you do is extract the files in Japanese so they don't get renamed by your system, it's a setting in most compression programs.I'm getting the same error. It in the prologue and happens when the chimera breaks free from its curse. It sounds like you fixed this error and if you can list a step by step guide to fix this it would be very appreciated.
Also, they answered your question before you even asked it, it was 2 posts above the one you quoted.