Well, yes, I have some modules for PS3, Wii U Mugen for example, and some other systems, that RocketLauncher cant do a properly audit because you have folders instead of rom files, with the skip romcheck option it just load the game fine, if in RocketLauncher you try to check the rom file in those systems you just get an error, the same happens in LaunchBox, so if it goes it goes directly to rocketlauncher it will work just fine with LaunchBox as HyperSpin for example.