it's against the EULA to use anything to modify the Game.exe and RGSS301.dll files, and I assume that's what's been done here
Even though you can get all the files either from the Ace RTP (dll) or any game (Exe)
Of course you could just say, go download 217MB (which causes costs of $0.18) and install something you possibly don't want and register with your email and dig around in hidden folders and create a new project and get the files outta there, and you still have to download my kit because there are scripts in there you need, and - I guess you get the point
Open your Game.ini and see what is written behind Library=. Rename RGSS301.dll accordingly (in most cases to RGSS102E.dll).