Hi taro, this is a known issue with the Hercules DJ Console RMX. It appears to be a problem with the data it is sending over MIDI. There is a work-around we have added to fix this for MixEmergency 1.5, but I can't yet say when this will be released. If you're a registered user of MixEmergency, send me an e-mail (to either support or contact at inklen.com) from the address that you registered with and I'll see if we can sort something out to get this working for you.