I don't know if it is user error or the fact that there are some hiccups in using an Auber on an SI. In my short time of ownership, I've witnessed some strange behavior. Almost like a computer that gets stuck and needs to be re-booted. I did a recent auto tune that cleared a problem that I was having after it had been working fine until it didn't. Try running a fresh auto tune and see if that clears the problem.