the interface is a MOTU usb, simple 2in-2out one. nothing too fancy. seems to be working in good stead so far though, so i'd be surprised if the error is in the interface, but you never know. i guess the thing that concerns me is whether this data error is internal to the dx7 (i.e. midi data is being received but the dx7 isn't setup properly to receive, which i'm pretty sure it is) or whether the data error is garbled information or something like that. i've checked cables and all that jazz. since i use the dx7 pretty much only to input midi into logic audio, midi data being received by the dx7 isn't a big priority, but still...