@mitu thanks! Updated the command:)

its a bug ... after each update, you will need to go to the spashscreen settings and make sure to change them to whatever it was already set to and the problem will be solved.

I have noticed this also and it is very annoying. After updating the retropie setup script the randomizer is disabled and needs to be enabled after each update...

Yeah, basically that. I feel daft now; I actually searched google for the terms "retropie randomizer" and all I got was stuff about splashscreens.
Thanks though, I'll give the kid mode rom roulette a try later and see if it's functional. Does anyone know if we CAN bring this feature to the normal ES mode with a script or something?

please have a thorough read of the complete wiki page, particularly https://github.com/retropie/retropie-setup/wiki/Child-friendly-EmulationStation#installation.
Again, make backups, expect bugs.

@madmodder123 there is a randomiser built in to the splash screen module already...