I'm not sure why it doesn't work properly. I tried to play a DVD using mplayer and loading SNES roms off a DVD. The homebrew app just freezes when it tries to read from the DVD. I have a WiiD modchip, so I installed patchmii_core, then DVDX using PatchMii Install. I tried to google for anyone having any issues with DVDX at all and found nothing.