I have had the PODxtLive for long years now, maybe 9 or 10. and a week ago had the same problem, I couldnt fix it, later on found the error messages dissapeared and wont show anymore but the sound is not the same than before. I came around this site by mere chance and the first post I find is this. weird. Did Line6 made the stuff to last a given time?
Everything Im telling happened while in a gig, havent plugged in the pc for a while.
Also I havent bought any model packs I was using the models that came in from factory. wich is even more weird.
I´ll try to fix this, please update any news with your pedal. and Thanks for the post!