Virus Ti Snow + Ableton 7 problem

[slowblow]

Hi Everyone, im new on the forum so I want to say hello first.
I have a serious problem [for me]. I`m using Macbook Pro [since one month, early PC] with Leopard with latest udpdates and my daw is Ableton Live 7.0.10. The main problem is when I`m dropping Virus Snow as Ti or Au to new track then Ableton crashes. I have checked all parameters, Virus Control Center is not responding, and Virus Ti Settings says "Virus Ti is not connected". I`ve updated Snow to latest beta version also I`ve tried with earliest versions. Still no idea what is going on..
anyone can help me ?

p.s- I`ve checked Snow on PC and it`s working perfectly..