There are a few bugs in the downloadable version—like not being able to open the gallery—and certain washing machine scenes are paid-only; I did pay for them, but it glitches out and sends you to random places.
Viewing post in House of Shinobi v0.25 (Public Release + Web Version) comments
It's fixed now. Thank you so much. I realized the problem is the language change: it's like it also modifies the base code, and this causes it to look for completely different files when you click an option, because their names were changed by the translation. Or well, that's what I think, I don't know if that makes sense. But basically: if you set it to English, the bug doesn't happen and the scenes load correctly.