I have exactly the same problem. I have set my system to japanese to play japanese hentai games. I won't change my system language because no game in the world has this problem except bloodomen.


Edit: The Locale Emulator didn't work for me. Many dlls were missing to run that. Luckily I had Applocale still installed on my PC and I used it to run the "Launch Blood Omen - Legacy of Kain" Shortcut in the "Blood Omen" folder in "English". Too bad Applocale can't be downloaded from Microsoft anymore. I hope gog can solve this issue somehow.

Oh I didn't know Applocale could still work in Windows 10. I'll try to fetch it from an old computer sometimes.

This happen on JAP MUI of Windows with Japanese set to Unicode-not-supported-apps. So topic starter here do something with his Widnows MUI settings: if he REALLY use EN version of Win - should be ok bt default (that unicode option change automatically). Probably change back that unicode-option to japan, right? To play some "japanese games" just like BLUENIGHTLAGOON, right?

There is a HEX-editing fix to game itself (en-version, japan version require japan Windows) - this is a bug ingame (cause it wrong not possible to start en-applications on any Windows).
Also Verok's wrapper should solve this (he know about that bug).

Or general solution descried here (unicode settings i mention above):
[url=http://www.pcgamingwiki.com/wiki/Blood_Omen:_Legacy_of_Kain]http://www.pcgamingwiki.com/wiki/Blood_Omen:_Legacy_of_Kain[/url]

http://www.pcgamingwiki.com/wiki/Windows#Game_files_missing_after_upgrading_or_refreshing_Windows
some ways, there is also link to download Ms AppLocale tool.

Actually, I'm in the opposite position:
I changed my Windows 10 UI to English, because the Japanese interface was causing many very weird and obscure problems with a lot of utilities.
Whatever border you are sitting on, this operating system is trouble when it comes to dealing with languages it seems!

This has now been officially fixed in a patch, launch GOG Galaxy to get the update.