I saw this and thought I'd give it a go since I've never heard of Joiplay (that's all that came up when I searched 'Joyplay emulator')

Any advice on what to do about this error?

I extracted the game's .rar, got the plugin for RPG Maker, gave both that and the emu permissions to see the game files and decrypted the game scripts when prompted. Selecting 'unpack/repack scripts' instead of opening the game normally gives a different error. Did I make a mistake or is this game not compatible with emulation at its current stage?