You are missing that file because my install method creates a backup of what it replaces in case something goes wrong. Especially because FBI is really fiddly with installing the home menu and often will fail before finishing, causing the home menu to crash/stop working.I used FBI, that was probably the problem.
Running the install script with a working home menu cia (either your modified one or a fresh one found online) may fix your problem.
And next time, you should probably just follow the guide instead. I designed everything to be as easy as possible while also ensuring its as safe as possible.