Omamez-
Regular marquees or the console marquees by verion? If it's the console marquees then I know what the problem is. I just forgot to mention it to you, so that's on me.
Anyway, as it is right now, if you go into layout options and turn off enable marquee then the code looks for a custom user.jpg. I did it this way because some users might want to use their own custom marquee. Like Omamez arcade, for example.
I usually add a generic user.jpg in the folder but this time I didn't add one. So, when you turn off enable marquee it's empty - oversight on my part.
That said, as a temporary solution you can use a custom made image or use one of verions and rename it to user.jpg. Then just drop it in the robospin folder. Then when you turn off marquee the custom user image will be loaded
Here's the thing though, I already have emulator system logos as side art but I could change the code to use console marquees like verion's instead of a custom user image when users don't want to use original marquees.