How To Add A RTP To A Game?

I’m trying to get Yume 2kki to work, but error messages about missing files keep popping up as I play the game. I’ve only been able to download an English RTP, but it seems Japanese is needed, which has failed every time I’ve attempted, the common guides being of no help in the manner. Is there something I’m missing?

Hello, on which platform are you playing?

The English RTP should work. Which one are you using, the one from rpgmakerweb?

I am on Windows 10, and aside from the Japanese one that doesn’t install, I’ve been using the English RTP mentioned in this wiki tutorial.