Unable to run VCD games from MX4SIO

My VCDs are set to launch as app, the folder structure and files seem correct and I have the XX.GAME.ELF files, but when I try to launch the game it escapes to launchELF with a 'No Disc' message. I'm using the 1.2.0 beta.

I have a mirror copy of my MX4SIO in a USB drive and it works fine from it.

I'm sorry if it is a known behavior.