Recently upgrading from Logic Pro 9, where everything Virus related was working swimmingly, but after switching to LPX, I get no audio, only sync errors. Not entirely sure what's happening here. This would happy every once in a while when I was in Logic 9 but usually just stopping the track and hitting play again would reset it. I think once I just had to reboot the Virus and then it was fine.
I'm just not entirely sure what's up here. Google didn't really turn up anything super helpful.