vixen scheduler is working fine for me. are you using pixel net? my program has it set up to use my sequence profile for each song, but they are all on the same profile any way. if your using pixel net with usb donble, uncheck usb dongle in the profile. if your using ether dongle, just use the ether dongle in the profile and uncheck pixel net. i had the same problem with it shutting down after one song and as soon as i did the above, everything works fine for me.
duane