I tested it a moment ago, after waking up, still the same thing.
So, I did a factory reset. So far it seems to be ok and I can audition sounds without it crashing.
I am now taking my time when auditioning. Instead of flicking through fast, I'm doing it slowly and letting the sound finish playing before I switch.
Some pads will play on if you press audition. You have to press it again to stop the sound playing. What I think is happening is if the sound is still playing, and you try to play another it gets confused and crashes.
If after resetting you find that a sound wont stop playing even after pressing audition again (like just happened to me). Press the "Arp On" button and it should stop. Sounds that play on there own are arpeggios I believe.
For anyone reading who don't know how to reset the virus Ti. Turn off the virus (holding transpose keys). When turned off, hold down the edit button under arp (which is under master volume). The BPM light and the light in the original value light should blink. Let it power up. You're now reset