hi david, had the same problem with m led's using vipers tsi file, you might want to check if the midi is enabled on the unit as follows:
press shift and sync button on the left deck only at the same time , ( dont let go) turn the power on, as soon as it lights up press the key/tempo button ( under the vinyl mode button) if its lights up , it's midi enabled , switch the power off afterwards and its saved, run it again, it should work

, i got mine working now,
@viper ist ne geile mapping

, vielen dank für die mühe , da wird demnächst dat haus gerockt !!!! lg aus Manila!!
Bookmarks