hi, I'm having trouble with my pulse 2. some patches have stopped making sound after i saved them. They work fine for awhile then all of a sudden they stop working after a reboot. No sound with a sequencer or midi keys, the midi channel is set up correctly. Most patches work but some of the ones I made myself and a few factory ones don't do anything seemingly for no reason. Has anyone experienced this before? I have tried intil global parameters, panic function and they still don't do anything.