Really curious, coz I've put them on a DVDRW & they work fine !
no, the burner's fine. 200 good, 1 bad. and all of the roms worked on dvd with the SE that ran samurai showdown 5. i renamed them properly to work on these two xbe's (they worked on my HDD), but once i tried to load them from my dvd-r, they freeze where the neogeo bios files are supposed to come in. i'm gonna try my solution one day, but like i said, it still won't fix the kof 2002 problem, and i'm low on disks. maybe once i get some dvd-rw's.
and as for the xbe that now needs a patch to run metal slug x, i might try that one again, but if it couldn't run msx without a patch, i'm really reluctant to use a dvd-r hoping it'll play everything else.
Check you've renamed all the roms correctly & you don't use encrypted roms.